LD-Log (GPS Long Distance Log)

Check the notification in the app title bar to ensure that missing waypoints are not just skipped: in this case logging works normally, but waypoints are not saved, because they are too close (see log-settings -> min waypoint distance).
If waypoints are instead shown to be missed, it is possibly the case that there is no sufficient GPS-signal or you set your GPS accuracy-setting too extreme in combination with a too low waypoint-timeout (see log-settings).
If though waypoints are regularly saved in active device mode, but keep failing in standby mode with the same log-settings, probably a special power saving function is active on your device that blocks the GPS receiver. Deactivate those power saving functions, or better: Add the app as an exception, if there is such a possibility. For example this is, how you deactivate the 'power saver' mode in Android 5.0 up: System Settings -> Battery -> Options Button -> Battery saver -> switch off & set 'Turn on automatically' to 'Never'.
Should you receive a warning message about missed waypoints in standby mode, read under WARNING MESSAGES -> What does the warning message mean, that the logging function has been blocked in standby mode.

What would be a reasonable waypoint interval for my usage?

This is dependent on your overall journey duration, the number of routes, your travel speed, battery power and the expected total number of waypoints (see below).
For a multi-day sailing cruise an interval of 8-10 minutes should be sufficient, particularly when taking a manual waypoint when changing direction.
For a prolonged hike, an interval of 2-3 minutes should be sufficient.
If you walk or bike in a city or are travelling by bike or car for a trip lasting several hours, then you probably want to activate tracking, see under TRACK.
The interval may be changed while logging.

Is it possible to log with intervals less than one minute?

Editable waypoints can only be recorded in intervals of one or more minutes. If you would like to record your positions in shorter intervals, activate tracking, see under TRACK.

Why has the waypoint interval of 30 seconds been removed?

This special feature has been a relict from the time before the tracking function was introduced. For position recordings with short intervals tracking is working in a more flexible, precise and reliable way. It also does not consume much more battery power compared to such short waypoint intervals. So instead just use the tracking function, see under TRACK.

Is there a maximum number of waypoints?

Data volume has natural limits - your internal device memory. This is dependent on individual hardware and software settings.
Even though a single waypoint uses negligible storage space, it is recommended to always set your log setting to a reasonable setting for the given conditions.

Does the minimal waypoint distance also apply to manual waypoints?

No. Manual waypoints will not be skipped due to an insufficient distance from the previous waypoint.

What does waypoint-timeout in the advanced log settings mean?

The time after which the determination of the current waypoint position will be aborted - a setting to minimise power usage if there's no sufficient GPS signal available.
This value can never be higher than the set interval-time (with one exception - see below). It should be set higher with increased GPS accuracy settings.
The timeout for manual waypoints is always 2 minutes longer than the global value for the automatic log to ensure that manual waypoints have a smaller chance of being missed.

May I record waypoints depending on my speed when logging?

Yes. In the advanced log settings you will find the setting 'Waypoints by Distance'. Enter the desired distance in which waypoints should be recorded. The waypoint interval for the next waypoint will then always be recalculated depending on the average speed of the last three waypoint distances. This setting is intended to further reduce battery consumption as well as to avoid getting unnecessary waypoint information when moving at slower speeds, or having to adjust the waypoint interval manually every time in such situations.
This function is only useful for movements without sudden changes in speed and / or frequent changes in direction.
Important:
1) Set the waypoint interval to a generous value, since after this time a waypoint is being taken in any case - regardless of the desired distance! Example: On a hike you would like to record waypoints approximately every 200 meters. At an average speed of 4 kmh (2.5 mph) about every 3 minutes a waypoint will be taken. In this case set the waypoint interval to at least 5 minutes, so that even at slower speeds the app keeps logging by distance.
2) In order to allow the app to calculate speed correctly, do not start logging with this function before you actually start moving continuously. Should there be no previous waypoints available by which the next waypoint interval can be calculated (new route), the app will start recording the first four waypoints with an interval of 30 seconds in order to get the necessary speed data for the following interval calculations.

How does the log start scheduling work?

In the log settings, choose a future time for automatic log start. When you leave the log settings by pressing the 'back' button of your device, the log scheduling with the current settings will be started.
Please note that completely shutting down your device will erase scheduling information.

What are the advanced GPS accuracy settings good for?

In normal situations, the adjustment of these settings is unnecessary. The default accuracy radius setting will be sufficient.
Furthermore, adjusting these settings is not recommended in all cases where reduction of battery usage is important, as they can unnecessarily extend the duration of the GPS device's activity.
Access to these settings may, however, be useful in situations where you are not measurably moving and/or are dependent on a (very) precise determination of position.
Please note, that these settings do not invariably lead to better results, but do increase the likelihood of more precise positioning.
If you are experimenting with those settings make sure that you are increasing the waypoint timeout accordingly, particularly if you are using multiple fixes.
Extensive testing with these settings should be done before using them permanently.

What is the advanced option 'Waypoint Time Source' good for?

Here you can set, if the time for wayopints will come from the device or the GPS satellites.
The time of the GPS satellites might be more accurate, but most notably it is independent from the device.
You should not change this setting, when the active route is still being recorded, as future waypoint times might differ from the preceding.
In addition you should not set it to satellite time when using an external GPS device, as satellite times might not be forwarded reliably.
You are advised to do your own tests before using satellite time.

What is the advanced option 'Use Alarm Clock Function' good for?

In order for the app to work as battery efficient as possible, it uses an Android service to schedule its logging background tasks. As unfortunately many apps are using this service unnecessarily in standby mode, especially since Android 5.0 limitations are being integrated into the system with the reasonable aim to improve battery usage. Most manufacturers develop their own implementations of various battery saving modes and some even to the radical extent, that they implement a fixed, non-configurable delay of scheduled background processes in standby mode, like with some Samsung devices with Android 5.0 up. The app is then not able to record waypoints in the desired interval, if it is under a certain threshold.
If you receive a warning message that the log function has been blocked in standby mode (see WARNING MESSAGES -> What does the warning message mean, that the logging function has been blocked in standby mode?) or you generally are having problems with timely recording of waypoints in standby mode and you cannot find a configurable power savings mode on your device with which you may resolve this problem, then activate this setting. In this case the Android alarm clock function will be used to schedule waypoint recording, which should not be subject of above restrictions. Please note that while logging an alarm clock symbol will be displayed in the Android status bar, showing the 'alarm time' of the next wayopint recording.
If this setting does not solve recording problems in standby, then try the setting 'Use Samsung Galaxy S4 Fix' (see below).

What else can I try, if waypoint recording is being blocked in standby mode?

In case you are receiving a warning message that the log function has been blocked in standby mode (see WARNING MESSAGES), you should already have tried the following solutions in this order:

Add the app as exception to the manufacturer's specific battery saver, if possible (e.g. to the Sony Stamina Mode, Samsung power saver, Emui (Huawei / Honor) battery manager, etc.)
Disable the manufacturer specific battery saver, if possible
Advanced log option 'Use Alarm Clock Function' (see above)

If the log function is still being blocked, add the app to the 'ignore optimization' android app list (Android 6.0 and above). This setting is pretty much hidden depending on the device manufacturer. In the original Android it can be found under Settings / Battery / Options -> Battery optimization. Then under 'Not optimized' choose 'All apps' and in the following app list click on the app and set it to 'Don't optimize'.
It is known, that e.g. in Emui (Huawei / Honor) with version 4.0.x (Android 6.0) and above this setting must be done in addition to setting the app as 'protected app' in the battery manager. In Emui 4.0.x you'll find the Android app optimization setting under Settings / Apps / Advanced (bottom of app list) / Ignore optimizations. Here add the app as described above.
Should the declaration of the app as a 'not optimized app' even in combination with the in above list mentioned settings not solve your problems with waypoint recording in standby mode, please send an email (see contact info at the bottom of this page).
As a last resort, especially if you are having a Samsung Galaxy S4 device with Android 5.0.1 and firmware 8.10.2015, try the advanced log option 'Use Samsung Galaxy S4 Fix' (see below).

What is the advanced option 'Use Samsung Galaxy S4 Fix' good for?

If you receive a warning message that the log function has been blocked in standby mode and you cannot find a configurable power savings mode on your device AND the advanced option 'Use Alarm Clock Function' (see above) does not help, try this setting as a last resort. It specifically refers to a bug in the Samsung Galaxy S4 with Android 5.0.1 and Kernel 8.10.2015, but may in rare cases be helping on other devices too. Use this setting WITHOUT the alarm clock function first and only activate that one too, if the 'Samsung Galaxy S4 Fix' alone does not help. Should the combination of the two settings not solve recording problems in standby, then you should contact the manufacturer of your device.
Please note, that the setting 'Use Samsung Galaxy S4 Fix' consumes additional battery power! That's why you should never use this setting unless you are absolutely sure that only this fixes the logging problems on your device.

What is the advanced option 'Keep GPS WakeLock On' good for?

With this setting the device is explicitly being kept awake during all GPS retrieval actions. Only activate this setting, if tracking has been aborted unexpectedly on your device several times.
With this setting the battery consumption during logging will increase!
This setting does NOT help in situations where the log function has been blocked!

Can I use the app together with an external GPS device (e.g. over Bluetooth)?

Yes, if you are able to connect your external GPS device with an app that delivers its ongoing GPS position to the system for general usage by means of a so called 'Mock-Provider' (e.g. 'Bluetooth GPS' by GG MobLab, also see next topic).
From Android 4.3 up, the initial waypoint description is followed by '(EXT)', indicating that its position did not come from the internal GPS device.

What is the advanced option 'Bluetooth GPS App Control' good for?

If you are using an external GPS device and are connecting it with the app 'Bluetooth GPS' by GG MobLab, you may reduce the battery usage of your device even more while logging:
This setting syncs the bluetooth connection of the Bluetooth GPS app with your external GPS device for each waypoint localisation and stops it again afterwards.
Please note that this setting is considered 'experimental', which means that you should test its functioning with your devices extensively before relying on it (if you don't get an external GPS signal, battery usage will rise with this setting).
If no position is being delivered by the 'Mock-Provider' of the Bluetooth Gps app, the app will automatically stop it and switch to the internal GPS device.

Presets: Which log settings are stored?

All settings except the automatic log start and the advanced options.

Why is only the active (last) route being recorded, even if I selected a different one at log start?

The app's concept of trip logging provides that routes are always being recorded chronologically.
If you would like to collect your ways seperately, simply create several trips, each of which you then load and further log as appropriate.

Waypoints

How can I quickly add entries to the last waypoint?

Choose 'edit last waypoint' in the route context menu or press the top waypoint in the waypoint list.

What is the difference between standard waypoints and waypoints with activated travel-log / logbook entry (event-waypoints)?

Waypoints with activated entry are highlighted and displayed with additional information in the waypoint list as well as in map view.
All waypoints will be exported to GPX / KML / KMZ and the trip-report solely with position- and time-information, whereas waypoints with activated entry are additionally exported as dedicated waypoints containing the complete set of entered information.

How can I add an immediate event-waypoint (with or without entries / photos) without having to wait for a GPS-fix?

Press the button 'Event-Waypoint' to open the appropriate quick-menu. (In sailing-mode you'll have the option to instantly set the engine state.)
This will store a waypoint with the last known position, which will be updated once the current position is being fixed. If the fix fails, it will be updated with the next regular waypoint-position.

What are the waypoint templates good for?

How can I change the timezone of waypoints?

From app version 4.0 waypoints will be saved together with the timezone currently set on the device.
Under certain circumstances it might occur that you would like to change the timezone of waypoints retrospectively.

You have completed a trip in a version prior to 4.0, that has been recorded in a timezone different from the standard timezone of your device.
At the time of recording your trip, the timezone of your device was set wrong.
Your trip spans across multiple timezones and the device didn't switch timezones at the right times.

In order to change the timezone of waypoints, in the waypoint editing screen press the top row where the waypoint time is displayed. A dialog will open where you can choose the appropriate time zone.
IMPORTANT: The selected time zone will be set for this and all subsequent waypoints of the complete trip (former time zones will be overwritten)!
You should normally do this only on the first waypoint of the first route of your trip.
If your trip spans across multiple time zones and you have to change them, proceed as follows: First note all waypoints with timezone changes. Start at the very first waypoint of your complete trip and chronologically ascending change the following waypoints with timezone changes.

How can I send a waypoint position via SMS or Email?

From the context menu of the desired waypoint in the waypoint list, choose 'send waypoint position'.
An automatically generated Google Maps link will be sent.
Or export a waypoint as GPX / KML / KMZ and send the file via email (just follow the export dialogs).

How can I navigate to a waypoint position with Google Maps Navigation?

From the context menu of the desired waypoint in the waypoint list, choose 'navigate to waypoint'.
Google Maps Navigation will be opened with the selected waypoint position set as destination.

How can I set a waypoint position as destination point?

From the context menu of the desired waypoint in the waypoint list, choose 'set waypoint as destination'.
The waypoint position together with the entered title will be saved as a new destination.

How can I move waypoints to the previous route?

From a waypoint's options in the waypoint list, select 'Move Waypoints'. This will move this and all previous waypoints to the previous route. You must first confirm the action. The selected waypoint itself is duplicated and thus simultaneously forms the starting point of the current route and the ending point of the previous route.

How can I split a route (move waypoints to a new route)?

From a waypoint's options in the waypoint list, select 'Split Route'. This will move this and all subsequent waypoints to a new route. You must first confirm the action. The selected waypoint itself is duplicated and thus simultaneously forms the end point of the current route and the starting point of the new route.

How can I join two routes?

From a route's options, select 'Join Route'. This will join the selected route with the previous route: All waypoints from the selected route will be attached to the previous route und the selected route will be deleted. You must first confirm the action.

How can I alter the geo location of a waypoint retrospectively?

In order to change the location of a waypoint, press and hold the point on the map in map view and follow the instructions.
It is recommended to move waypoints only in exceptional cases, as the authenticity of the recorded location and time is lost. Moved waypoints are displayed with a light orange color in map view and in the waypoint list. A new time for the waypoint will be calculated based on the speed / distance in relation to its surrounding waypoints. If there is track-data between previous and next waypoints, this will be lost.

How can I adjust the time of a waypoint retrospectively?

Changing the waypoint time is only possible after changing the geoposition (see previous question), i.e. after moving a waypoint on the map. You will be asked about it automatically.
Please see the comments on moving a waypoint above. It is also generally recommended to only change the waypoint time in absolutely exceptional cases. When moving a waypoint, the app calculates a new waypoint time, which applies in the vast majority of cases if there are waypoints before or after it. Adjusting the waypoint time can only be helpful in individual cases, e.g. if distant start or end points of a route need to be moved.

How can I convert trackpoints to waypoints for the current route?

In the waypoints display option menu (press the eye symbol in the title row of the waypoints screen) -> Convert Trackpoints to WP.
This feature might be useful for example in situations where you imported a GPX file which only includes trackpoint data without editable waypoints, but you would like to edit waypoints along this track.
The dialogs will guide you through the conversion process.

How can I convert waypoints to trackpoints for the current route?

In the waypoints display option menu (press the eye symbol in the title row of the waypoints screen) -> Convert WP to Trackpoints.
This feature might be useful in situations where you permanently want to solely display event waypoints and have no need to be able to edit current standard waypoints at a later time.
The dialogs will guide you through the conversion process.

Destination Points

Where do I find my trip destinations?

Open the destination list by pressing the flag symbol button in the button row at the bottom of the screen.
Or from the trip options choose 'Load Destination'.
All destinations are also being displayed in map view.

How can I create a new destination?

To manually enter a destination: Press the options button in the title bar of the destination list -> Enter New Destination.
To set a destination in map view: Press and hold the map at the desired location.
To set a waypoint position as destination: See waypoint context menu in the waypoint list.

How can I import destinations from a KML file?

Press the options button in the title bar of the destination list -> Import Destinations from KML.

What to consider when importing destinations from KML?

The app solely imports destinations from 'Point' coordinates (single placemarks) in a KML file.
Other forms of coordinates like 'Line Strings' (path marks) will be ignored.

How can I edit name and coordinates of a destination retrospectively?

Press the option button of the corresponding destination in the destination list and choose 'Edit Destination'.

How can I load a destination as the trip-destination (current destination)?

Simply press the destination in the destination list, or press its options button and choose 'Load Destination'.
In map view touch a destination point and in the following info dialog choose 'Load'.

How can I remove the current destination?

In the trip options -> Remove Destination
In the map options -> Remove Destination Point
the destination itself will not be deleted.

How can I export my destinations as KML file?

Export all destinations: Press the options button in the title bar of the destination list -> Export Destinations to KML.
Export a single destination: Press the options button of the corresonding destination in the destination list -> Export Destination to KML.

How can I finally delete a destination?

In the destination list: Options button of the corresponding destination -> Delete Destination.
In map view: Touch the destination point and in the following info dialog press 'delete'.

How can I finally delete all destinations?

Press the options button in the title bar of the destination list -> Delete all Destinations.

Track

What does the tracking function do?

With tracking enabled, additional GPS-coordinates (trackpoints) are stored between waypoints in very short intervals. This way the travelled path will be displayed and calculated more precisely, especially when you often changed direction. During tracking the GPS receiver is kept on continuously and therefore the power usage strongly increases compared to simple logging with larger waypoint intervals!
You may switch tracking on and off while logging and as such only track certain parts of your way by the second, like the exact drive through the city after a longer drive on the highway which was logged by the minute.

How do I start track recording?

Activate the tracking button in the log menu and start logging.

What are the track settings good for?

Here you adjust, how accurate the track is being recorded. These settings have a direct impact on the data volume of the recorded track. But also the already strong battery usage during tracking will be reduced noticeably, when choosing longer trackpoint intervals. Therefore you should always choose reasonable values for those settings, depending on the type and duration of your locomotion.

For which situations is the tracking function suitable?

For all types of locomotion at which the minimum waypoint interval of one minute still pictures a too rough path and which duration is not overly long, e.g. walks, jogging, car drives and motorcycle- / bicycle rides through the city or the open country, etc.

My device is always on charge, may I track infinitely?

No. Because data is being stored permanently, the available internal memory will be finally consumed at some point. Recording enduring journeys with the tracking function enabled can therefore not be recommended. Also take into account that when exporting large trip files, other software might have problems with them.
If you would like to do this nonetheless, you should then separate your journey into several trips, thus saving your current trip file and starting a new trip after a few days latest, depending on your average daily recording time. In your case you should also especially be aware of setting the trackpoint interval and minimum distance to as high as possible values (a for the desired accuracy only just acceptable amount).

Tracking is activated and logging started, but I don't see any progress displayed?

The displayed data is transmitted with each waypoint, which means that the update frequency is dependent on the waypoint interval.

Display

Why are some longer titles and descriptions truncated in the trip-/ route and waypoints-displays?

For lack of space. In the waypoint list however you have the possibility to show the complete names and descriptions of event waypoints by choosing the corresponding display options.
To view complete information go to the respective edit-screen.
The edit-fields of the descriptions will expand automatically with new lines, which means that there's no restriction on text length.
All information will be saved and exported at full length.

The displayed number of waypoints on the route-screen is followed by some letters and more numbers - what do they mean?

'sk': skipped waypoints (waypoint wasn't far enough from the previous one, see log-settings 'min waypoint distance')
'ms': missed waypoints (insufficient GPS signal and/or overly extreme accuracy settings in combination with the selected waypoint timeout)

The displayed GPS accuracy of the last waypoint on the route-screen is followed by some letters and more numbers - what do they mean?

Those appear when you are using the advanced GPS accuracy settings.
e.g. 'S 5/8': for the position-determination of the last waypoint 5 out of 8 available satellites have been used.
e.g. 'SNR 32': for the used number of satellites, an average signal-to-noise-ratio of 32 has been calculated.
If you've been setting multiple GPS-fixes, then all displayed accuracy numbers are averaged by the number of used GPS-fixes.

In the waypoint list I see entries that are colored green, orange/red or light orange - what do they mean?

Green indicates an event-waypoint for which a current position has not been obtained yet and therefore took over the position of the previous waypoint.
Orange/red indicates an event-waypoint for which a current position could not be obtained and therefore took over the position of the following waypoint.
Light Orange for event-waypoints or orange/ocher for standard waypoints indicates that this waypoint has been manually repositioned in map view.

Where can I set the default number of waypoints shown in the waypoints list?

In the waypoints display option menu (press the eye symbol in the title row of the waypoints screen)

How can I view added waypoint distances for a route in the data row of the waypoints list (output like in a logbook)?

By selecting to show only event waypoints (see next question).

How can I only display event-waypoints in the waypoints list?

In the waypoints display option menu (press the eye symbol in the title row of the waypoints screen)

How can I hide the descriptions for standard waypoints in the waypoints list?

In the waypoints display option menu (press the eye symbol in the title row of the waypoints screen) -> Display Options.
The options are saved until a new trip is opened.

How can I hide the data row in the waypoints list?

In the waypoints display option menu (press the eye symbol in the title row of the waypoints screen) -> Display Options.
The options are saved until a new trip is opened.

How can I hide the photos in the waypoints list?

In the waypoints display option menu (press the eye symbol in the title row of the waypoints screen) -> Display Options.
The options are saved until a new trip is opened.

How can I display names and descriptions of event waypoints in full length in the waypoints list?

In the waypoints display option menu (press the eye symbol in the title row of the waypoints screen) -> Display Options.
The options are saved until a new trip is opened.

Map View

How do I get to the map view?

Press the globe symbol in the trip- or route-screen, or by choosing the corresponding route- or waypoint-options ('View ... on Map').

What do the symbol buttons above mean?

From left to right:
1.) Live-position ON / OFF: Here you can let your current position be shown on the map. In order to save battery, the live position will be disabled as soon as the map view gets to the background or the screen is switched off.
2.) Info display ON / OFF: Last heading / speed, heading / distance to destination (if one is loaded), with live position additionally current heading / speed.
3.) New waypoint record / cancel: Only possible, if the active (latest) route or the whole trip is being displayed.
4.) Tracking mode ON / OFF: Only possible, if the active (latest) route or the whole trip is being displayed AND the automatic log is running.
5.) Go to last position: With live position on, go to current position, otherwise go to latest position of the route / trip.
6.) Keep screen on ON / OFF: When activated the screen will not automatically switch off as long as the mapview is kept in the foreground.
7.) View options
8.) Map options (below view options)

How can I refresh my current map view when automatic logging is active?

The map will automatically be refreshed as soon as a new waypoint has been recorded and the active (latest) route or the whole trip is being displayed.

Under which conditions does the map follow my position automatically?

As soon as the latest recorded position is centered in the map (arrow button 'go to last position'), the map will be recentered with each position update and as such the position being followed automatically. This applies to the last waypoint of the active route for each new waypoint as well as with the live position for position updates. The map will always be newly centered as soon as the live position has been found.

How can I get to the last waypoint of the route / trip when the live position is active?

Select 'go to route / trip end' the view options menu (top right).

How can I only display event-waypoints in the map view?

In the view options menu (top right) -> Display Options.
The options are saved until a new trip is opened.

How can I display thumbnails of my images instead of the camera symbol at all zoom levels in the map view?

In the view options menu (top right) -> Display Options.
The options are saved until a new trip is opened.
With the default setting image thumbnails are only shown at a close zoom level.

How can I save a screenshot of my current map view?

In the view options menu (top right). These screenshots will be stored in the app folder 'screenshots' for later usage.
You may also directly attach map screenshots to waypoints by choosing 'import an image' from the waypoint editing screen.

Why is the distance number in the scale of the map view changing not only during zooming, but also when panning at smaller zoom levels?

Because the earth is a ball and not a rectangle.

How are maps being cached?

All previously viewed map tiles of the respective map source are automatically being cached and remain available for offline usage. It should be noted, that map tiles of the current view are only available for the corresponding current zoom level, which means that when zooming into the map, they have to be loaded again for the next zoom level. If you're offline and are zooming into an area that hasn't previously been viewed on this zoom level, then it is impossible to get a detailed map displayed. In this case you're getting a scaled version of the last maximum available zoom level.
Please note, that the storage space has its limits - depending on your available storage space it will be dynamically adjusted. As soon as its maximum size is reached, older tiles will automatically be deleted in the order of their expiration times.

How can I create custom maps and let them display in the map view?

The app supports the offline map formats 'Osmdroid SQLite', 'Osmdroid Zip', 'MBTiles', 'Osmdroid GEMF' and 'Mapsforge'. There are maps in those formats to be downloaded around the internet. With tools such as 'Mobile Atlas Creator' (MOBAC) you may also create custom maps from various sources in these formats. In conjunction with other software like QGIS e.g. you can even use self scanned maps with the app. For creating custom maps that way, quite some level of knowledge and/or practice is needed. Please note that there is no support for creating maps or using third party software.
If you have the free choice of one of the supported map formats (like in MOBAC) generally 'Osmdroid SQLite' is to be preferred. Copy your offline map files to the app folder 'maps' or to a self chosen custom location (see below). They will automatically be available at the latest with the next opening of the map view. Recognized offline maps may then be switched on and off separately in the map options. When activated, they will always be displayed on top of the base map with each of their containing zoom level.

Where is the storage for offline maps located?

From Android 10 on, offline maps first have to be imported via the map-view main menu > 'Offline Maps'. You'll be guided through the process. Offline maps will be copied to the app's internal storage, which is the only way the app can use them under Android 10 and higher.
The following information is only for Android versions lower than 10:
With the first launch of the map view, a folder named 'maps' will be created depending on the respective app variant within the folder 'LD-Log' / 'Geo-Log' / 'Sail-Log', or 'LD-Log FREE'. Here you must copy your offline map files by default. In the automatically created subfolder 'cache', all already viewed online map tiles are being stored - this is being managed by the map view itself.
You also have the possibility to set up an additional external custom folder, in which it should be searched for offline maps, e.g. if you would like to save your offline maps to SD card due to storage space. In this case go to the map menu, choose 'Offline Maps' and in the following dialog 'External'. Offline maps will be displayed both from the default as well as from the custom external folder.

I have successfully integrated an offline map like described above, I'm also seeing it in the menu 'Offline maps' as being activated, but it isn't shown in the map view?

An offline map always only contains a certain area and this only for a certain number of zoom levels. Otherwise files would grow too large and could not be handled. The map will now only be displayed in the given area on exactly the zoom levels, that are actually available in the offline map. If you are positive that you are viewing a part of the containig area in one of the available zoom levels, but still can not see the map, is it possible that another offline map of this area is overlapping the current one? (see below 'In which order are map layers being displayed?').

In which order are map layers being displayed?

Available and active offline maps are displayed in alphabetic order on the top level of the map view. An exception are mapsforge maps which are being displayed in alphabetical order behind the other offline formats. This means that if you would like to display different offline maps with overlapping map areas on the same zoom levels simultaniously, make sure that the filename of the map that should be displayed on top is listed before the one in the back (example: 'Brooklyn_1.mbtiles' will be displayed in front of 'Brooklyn_2.mbtiles').
As background map the selected online map (base map) respective its cached version will be displayed. If activated, the transparent OpenSeaMap layer (see below) will be shown on top of all other map layers.

What should I know with respect to using Mapsforge maps (.map files)?

1.) Advantage file size: Mapsforge maps are vector based and therefore their file size mostly is significantly smaller than that of bitmap maps (all other by the app supported formats).
2.) Disadvantage performance: Mapsforge tiles must be rendered in order to be displayed - depending on the map details and the processing power of the device, this may take some time and therefore will use more battery power than the display of bitmap maps. Especially map tiles of lower zoom levels might be displayed with a noticeable delay.
3.) Cache: Already rendered map tiles will be stored in the map view cache and thus will be available instantly after the first view. You may empty the cache for each mapsforge map by choosing 'Clean Map Cache' from the map menu and then by selecting the respective map filename there.
4.) Renderthemes: Mapsforge maps need a so called rendertheme in order to be displayed. A rendertheme defines the final map style and basically consists of a XML file, possibly together with other associated files or folders. The app uses an integrated default rendertheme. If you would like to use a custom rendertheme, you may do so as follows: Store a rendertheme, that all mapsforge maps in the app are supposed to use, in the app folder 'maps' under the name 'mapsforge-rendertheme.xml' - don't forget to also copy all possible support files or folders to this location. In the case, that a rendertheme should only apply to one single mapsforge map, then copy it to the same location as the corresponding map file and give it the same name, but with the ending '.xml' instead of '.map'.
5.) IMPORTANT:

If you changed a rendertheme or installed one at a later time, or have replaced a mapsforge map with an equally named one, then you should first clean the cache of the respective mapsforge files (see 3.), because otherwise outdated data will be shown at previously viewed map tiles.
Make sure that you deactivate the display of all offline maps, that you are currently not using, because otherwise battery usage will be unnecessarily high (also see next FAQ). This especially applies to mapsforge maps!

What should I consider, when there are several offline map files simultaniously present int the 'maps' folder?

Always only activate those offline maps that you are actually currently using (see map setting 'Offline Maps' in the map view)! Otherwise with each zoom or moving action unnecessary map archives will be searched through, which causes quite some computation and thus battery usage.

Where can I read the currently active zoom level in the map view?

The number behind 'Zoom' at the bottom to the right in the map scale bar.

Why does the map get pixelated when I zoom in?

There are two special features of the map view that might produce a pixelated map display.
1.) Stepless Zoom: In the map view you may zoom in and out floatingly. This means that the map is being scaled while zooming between the fixed zoom levels. Thus maps may appear pixelated at a point where you zoomed into the current zoom level so far that it is close to the next 'real' zoom level with more detailed map tiles.
2.) Map simulation: If there is no network available or you've activated the map view's offline mode, map tiles of unavailable zoom levels will be scaled from lower zoom levels, so that you're still able to use the map on those levels even though in a worse resolution. If there are only tiles available from a far lower zoom level than the current one, the map display may seem pixelated beyond recognition due to the extreme enlargement.

What is the map option 'Show OpenSeaMap' good for?

With this option the transparent OpenSeaMap layer will be displayed on top of all other maps (sea marks with a worldwide divergent coverage). In sail mode this option is initially activated by default. Deactivate this option if you are not absolutely needing it, e.g. if you're displaying an offline nautical chart which already includes sea marks on its own. The display of additional map layers always consumes additional battery recources.
Opposed to the base and offline maps, the OpenSeaMap layer will not be scaled, when there are is no data for the current zoom level available. This means that when being without an internet connection or in map offline mode, sea marks will be missing for areas and zoom levels that have not previously been viewed (cached).

How can I display a satellite imagery map?

Choose e.g. 'Bing Aerial & Labels' (worldwide) or 'USGS Sat' (USA only) as base map.

How can I display zoom buttons?

Activate them in the map options. They will then be visible just above the scale bar at the bottom right.

Why has the original Google Map view been discontinued?

It's been technically outdated, while the new map view is a lot more powerful and flexible in any way. If you are missing satellite imagery, choose e.g. 'Bing Aerial & Labels' (worldwide) or 'USGS Sat' (USA only) as base map.

Compass

What does the compass need the current GPS position for?

The app compass is designed as a bearing compass, which points to true north (geographic north). The GPS coordinates are used in order to determine the local declination (angle between true north and magnetic north) and thus to be able to calculate the true north value from the magnetic sensor values. Furthermore the current GPS coordinates are needed for calculating direction and bearing to the destination point.

Why is the field with the current GPS position colored in red?

The last GPS position is out of date (older than 5 minutes). Data might be incorrect. Press on the red field to get this info and start the position update process if nessecary.

How can I update the GPS position or abort the position update process?

Press the update arrow, respectively the cross symbol on the right top of the compass rose.

Why should the compass be calibrated with every usage?

The compass display uses the accelerometer of your device in order to set the north value of the electromagnetic field sensor in the correct relation to the actual orientation of your device. In order for the accelerometer to deliver exact values of this orientation, it must have reached its minimum and maximum values for each axis of the three dimensional orientation space at least one time. This is being done by completely turning the device around each of its three axis. Even if you have used the compass not that long ago, it might happen that those values are not correct anymore when restarting the compass and that it will show a wrong direction, be it only by a few degrees. You may get an instruction on how to calibrate the compass correctly at any time by pressing the question mark in the right of the compass screen title bar.

Why is my app compass inaccurate although I've been calibrating it several times?

The compass sensor reacts very sensitive on any electromagnetic material (e.g. magnetic tablet covers!) as well as on electric currency. Therefore you will get best results when remote from such influences. Furthermore the accuracy of the compass is dependent on your individual device and may vary between devices even of the same model. As such it is strongly recommended, to compare the compass to a physical compass, before ultimately relying on it! If the compass is still too inaccurate to be useful even by taking into account the above points, then unfortunately this app cannot help it.

Editing

What are the templates good for?

The template functions in the trip- / route- and waypoint-editing may help you to save recurring entries and then quickly load them for new trips / routes / waypoints.
Waypoint templates are directly available to choose from for immediate event-waypoints (Log Menu -> Event-Waypoint -> From Template).
The template function has been developed with focus on the sail mode with its many logbook entries, but may be helpful for other use cases also.

Why must I choose, which information is being saved in a template?

Because all of these information will be overwritten, when loading the template. Sometimes maybe you would like to take over the waypoint name of a template (such as 'departure'), sometimes only the description. This option must be set already during saving the template in order to be able to load the template without another dialog.

When saving a waypoint template, could this include the actual coordinates or the time?

Photos / Screenshots

How do I attach images to waypoints?

1.) Taking photos directly together with a new waypoint: Log Menu -> Event-Waypoint -> Photos
2.) Taking photos for an existing waypoint: Select the waypoint in the waypopint list or in map view and in the waypoint editing screen choose 'Take a Photo'
3.) Importing already available images for an existing waypoint: Select the waypoint in the waypopint list or in map view and in the waypoint editing screen choose 'Import an Image' -> 'from Gallery' / 'from FileBrowser'
4.) Directly saving a map screenshot for an existing waypoint: Select the waypoint in the waypoint list or in map view and in the waypoint editing screen choose 'Import an Image' -> 'from Map Screenshot'

What is happening to my recorded or imported images?

Images that have been taken with the app's photo function are stored in the app folder 'photos' and in the subfolder with the trip-ID of your current trip (see above). With some versions of Android, this image as well as all dismissed photos are kept in the general image-folder of your camera app, so only the confirmed image will be copied. With other versions, only the confirmed image will be saved solely in the app photo folder.
Images that are being imported in the app will be copied to the above mentioned folder, so they are kept in the original location.
Filenames of the images are generated from the corresponding route and waypoint numbers together with a timestamp indicating the moment of capturing / copying.
A thumbnail of each image is stored in the subfolder 'thumbs'.
Each image file is geotagged with the position of the corresponding waypoint (previously embedded geotags will be overwritten).

How can I have a larger view of my images in the waypoint editing screen?

Press the button '[+]' between 'take a photo' and 'import an image' once there are actual images available. If - due to enlargement - some images are no longer visible, scroll the image bar horizontally.

How can I view all of my trip images?

Press the images symbol button in the button row at the bottom of the screen or touch an image in the waypoint list / the waypoint editing / the waypoint details dialog in map view.

How can I send / remove / delete an image?

From the image context menu (press + hold the image on the waypoint editing screen or press the options button on the trip-images screen)

What is happening to my saved map-screenshots?

Map-screenshots that you take from the map menu are stored in the app folder 'screenshots'. You may reimport them into the appropriate waypoints, e.g. in order to integrate them into your HTML trip-report.
Screenshots that you directly take from the waypoint editing -> 'import an image' -> 'from Map Screenshot' are only stored with your trip images.

What are 'optimized' images?

When exporting files that should include images or sending an image, every time you may choose the 'optimized' option. In most cases you are much are advised do this, especially if the exported or further processed files (e.g. as PDF) should be sent or otherwise transferred over the internet.
Optimized images will be scaled down to reduced dimensions and are newly compressed. This way the optimized images often only have the fraction of the file size of the original ones while at the same time maintaining sufficient quality for most uses. Also portrait format images are being rotated by image calculation for correct display orientation in every export format.
Optimized images are stored separately in the subfolder 'optimized' of your trip images folder.

Import / Export, etc.

How can I import a trip from a trip-file or from a GPX-file?

In the main options select -> saved trips and there in the options -> import trip file. You can import either an 'LD-Log' / 'Geo-Log' / 'Sail-Log' trip file (.ldlog) from anywhere into the trip storage folder, or a GPX file.
Please note that for GPX files, the app only imports route information from 'trk' (track), track points from 'trkpt' (trackpoint) and waypoints from 'wpt' (waypoint) GPX tags with a valid timestamp. If the track points do not have a timestamp, but there are locally identical waypoints with a valid timestamp, the times of the track points can be interpolated and these can then also be imported.
If a GPX import fails or does not contain any importable data, the GPX file is in an incompatible format.

How can I import a route from a different trip or from a GPX-file?

In the route options, select -> Import route. You can import a route from either a saved trip or a GPX file.
Please note that for GPX files, the app only imports route information from 'trk' (track), track points from 'trkpt' (trackpoint) and waypoints from 'wpt' (waypoint) GPX tags with a valid timestamp. If the track points do not have a timestamp, but there are locally identical waypoints with a valid timestamp, the times of the track points can be interpolated and these can then also be imported.
If a GPX import fails or does not contain any importable data, the GPX file is in an incompatible format.

Where are my exported / saved files located?

Since Android 10: In the subfolders of the storage folder which you set up in the app's main settings.
Before Android 10: Depending on your device, either on the SD card or the internal storage and there depending on the app variant in the folder 'LD-Log' / 'Geo-Log' / 'Sail-Log', or 'LD-Log_FREE' and its subfolders.
The respective folders will be created when you export or save a corresponding file for the first time.
Filenames are generated automatically from the respective given trip-, route- or waypoint-names.
Please note: files of the same name and type will be overwritten.

How can I get a detailed overview of all saved trips?

You can reach the overview from the menu button in the app title bar -> 'saved trips' or from the trip context menu -> load trip.

How can I print out my travel-log / logbook or export it to a PDF file?

First make a HTML trip report (trip context menu -> make trip report). If your trip includes images, you are advised to use the options 'optimized' or 'thumbnails' instead of 'original'. This will reduce file sizes and ensure correct orientation of portrait format images. Afterwards choose to view the report.

Create a PDF / print on your Android device (Android 4.4 up):
In the report view in the menu at the bottom choose 'print'. The Android print dialog will be opened.
Create a PDF on your Android device (below Android 4.4):
Open your trip report directly from the report view in a browser that has an integrated pdf print function (e.g. latest versions of Chrome or Firefox). Choose 'print' or 'make PDF' from the browser menu. Unfortunately not all (especially older) mobile devices are capable of creating a complete PDF File, depending on the amount of trip-data and the number of images, especially if you are trying to print a trip report that includes the original images.
Create a PDF / print on your desktop computer:
Connect your device to a computer, open the appropriate text- or HTML-file (see above 'Where are my exported / saved files located') and print it or export it as PDF. If embedded images are not shown, your computer probably creates an automatic copy of the HTML file and therefore embedded images are not linked correctly anymore. In this case, copy the complete app folder to your computer and open the HTML file from here. Or create a zip file in the HTML-trip-report view of the app, transfer it to your computer and extract it. Now all the files needed should be included in the correct folder structure.

How can I send my travel-log / logbook or open it in another viewer?

Make a trip report (see above), in the following dialog, press 'View' / 'Yes' and press the appropriate Buttons at the bottom of the report-view.

How can I export only event-waypoints to my trip-report?

The trip-report contains a detailed list of your event-waypoints followed by a potentially long list of all recorded waypoints for each route. If you would like to only export event-waypoints to your trip report, you may change this behaviour in the main settings under 'trip-report export settings -> waypoint data'.

How can I publish my HTML-Trip-Report online?

Copy the appropriate HTML file from the app folder 'report-files' to your FTP-Server.
If there are any embedded images, you'll also have to copy the image folder under 'photos' with the corresponding trip-id. Or create a zip file in the app's HTML-trip-report view, transfer it to your computer and extract it. Now all the files needed should be included in the correct folder structure. If you haven't exported your trip with the 'optimized' option, you should make your original images smaller before putting them online, however. In addition, the relative path to the images must correspond to the path structure inside the app folder on your device. Thus the images relative to the HTML document must be located in a path structure such as '../photos/trip_[TRIP-ID]/'.

How can I get a summary table overview of my travel-log / logbook?

Make a trip report (trip context menu) and choose 'CSV files' in the following dialog. A comma-separated file for each dataset (trip, routes and waypoints) will be created. Those files are located in the app folder 'report-files' and in the corresponding CSV subfolder of your trip.
In the app main settings, you may choose if all waypoints or just the event-waypoints are to be exported ('trip-report export settings -> waypoint data csv').
When opening the files in spread sheet software or other CSV viewers, pay attention to the correct settings:
Character Set = UTF-8 / Field delimiter character = comma (,) / Text delimiter and recognition character = double quotes (") / First line = Header

How can I send my GPX- / KML- / KMZ-files or open them in a viewer?

Make a GPX- / KML- / KMZ-file by choosing 'Export...' from the corresponding context menus and press the appropriate buttons in the following dialogs.

What are the GPX-export settings in the main settings good for?

GPX-Viewers generally display imported files quite differently and often do not display the complete embedded information.
Using the export settings you'll have the option to adjust the GPX-display for your preferred viewer according to your needs.
Choose how route-paths are to be exported (as GPX routes, GPX tracks or GPX track segments).
Additionally you may embed all information displayed or calculated within the app into waypoints:
Trip- and route-names as well as their corresponding descriptions will be exported to their respective first waypoint, while their data will be saved to their respective last waypoint.
Since there is no consistent new-line attribute for the GPX format, the app uses different characters for structuring the exported information.

What are the KML- / KMZ-export settings in the main settings good for?

If you do not view your KML / KMZ files in Google Earth desktop versions, you probably will not have access to the complete exported trip- or route-data, as they are only accessible by clicking them in the list view.
In order to view this data in other viewers like the mobile versions of Google Earth, you have the option to include them into waypoint infos:
In the export settings you may choose to export trip- and/or route-data to the waypoint-infos. These will be saved to the last waypoint of the corresponding route / the last waypoint of the trip.

What is the difference between KML and KMZ?

KMZ essentially is a Zip file, which contains a KML file as well as possibly other folders and files. This way it is possible to embed images directly into the file.
For the app this means:

KML files are referencing the waypoint icons through the internet. Thus they will achieve their ideal looks only when online (when using Google Earth you are online anyway). In the case of KMZ, these icons are directly embedded into the file, so theoretically these files are able to keep their appearance offline.
If you include images in the case of KML, those will be referenced by a relative path. When saving to KMZ, they will be directly integrated into the file. This means that if you want to view your KML files with images, the relative path to the images must correspond to the path structure inside the app folder on your device. Thus the images relative to the KML document must be located in a path structure such as '../photos/trip_[TRIP-ID]/'.
As KMZ files with embedded images may become quite large, it is recommended to use KML with image references for viewing on the device (e.g. in Google Earth for Android). At present Google Earth for Android generally is unable to show KMZ-embedded images and also is not capable of opening larger KMZ files anyway.
If you want to transfer your complete trip or routes with images to your desktop computer and/or pass it to others, or directly want to send a single waypoint with an image, KMZ is the way to go. Pay attention to the file size, if you want to send the file - you may also use the KMZ-Export with thumbnail images, which files will never become very big and at least give you a preview of the images.

How can I completely import my KML- or KMZ-file in Google MyMaps and other limited software?

The standard export of KML and KMZ is optimized for the desktop version of Google Earth. The files contain many layers which present a most clear view and which can be separately hidden or shown. This complexity however is too much for Google MyMaps and possibly some other software, or rather is MyMaps limited that way that it only accepts a small number of layers for import. Furthermore there are some basic display issues with Google MyMaps. That's why an option 'Optimized for Google MyMaps' was included in the export options (Export -> KML or KMZ -> Optimized for Google MyMaps). With this option the export data is being organized in a different way so that Google MyMaps and other limited software should be able to import them without problems.

Why are the export-data or trip-report incomplete after being sent or opened?

You are possibly sending or opening an old file:
If the file already exists in the export dialog, first press 'New' to create a fresh file from the latest data, otherwise you are opening the previously created file.
Afterwards, you may send or open the new file directly.

Where do I find the trip-ID of my trip?

In the trip editing screen (press screen trip) on the top right.
The trip-ID is generated from the timestamp created when the trip, respectively it's first waypoint was recorded.

How can I send trip files ('ldlog' files), e.g. in order to transfer a backup of my trip?

In the menu of the tab 'trip' choose 'Send Trip File'.
If you would like to send another than the current trip, open the trips overview (press the menu button in the app title bar and choose 'saved trips' or press 'load trip' in the trip context menu) and in the context menu of the corresponding trip, choose 'send trip file'.

How can I transfer (import) trip files ('ldlog' files) from external sources to my local trips folder?

Open the trips overview (press the menu button in the app title bar -> 'saved trips' or press 'load trip' in the trip context menu), then press the options button in the title bar and choose 'Import Trip File'.

HELP - Why are my LD-Log files all of a sudden missing?

There have been a couple of reports by users of the full version of LD-Log, whose files from the LD-Log folder suddenly disappeared. The source of this problem has been tracked down to the app 'Clean Master', but might also apply to other 'cleaning' apps.
The problem can ONLY occur, if you can confirm ALL of the following:

You had the FREE version of LD-Log installed for the first time before end of July 2015 (before Version 3.1 FREE)
You exported at least one file from LD-Log FREE (this includes saving your trip for the full version)
At the time of exporting the file you had the app 'Clean Master' installed (this might also apply to similar 'cleaning' apps!!)
You then installed the FULL version of LD-Log
Later you uninstalled LD-Log FREE

The problem here is, that once you export a file from LD-Log FREE, 'Clean Master' records, that the main folder 'LD-Log' on your storage has been created by LD-Log FREE. Now if you installed the full version of LD-Log (which - before LD-Log FREE V3.1 - used the same folder name) later and afterwards uninstalled LD-Log FREE, the folder 'LD-Log' is now considered junk by 'Clean Master' (because the app LD-Log FREE, which originally created this folder is no longer installed). The LD-Log folder is now being recommended to be deleted or even being deleted automatically by 'Clean Master' depending on your settings. Even if the folder is being recreated by the full version of LD-Log, 'Clean Master' still considers the folder 'LD-Log' belonging to former LD-Log FREE and keeps on deleting it!
To get rid of this problem or prevent from it you can do ONE of the following:

Uninstall 'Clean Master' (the benefit of such apps is generally questioned by android experts for many different reasons and also other data of yours might be in danger)
Just cleaning the cache and data of 'Clean Master' unfortunately does not seem to be sufficient!
Tell 'Clean Master' to ignore 'junk' files associated with LD-Log FREE: Open the 'Clean Master' junk file scan, look under 'residual junk files' for 'LD-Log FREE', press and hold it and select 'add to ignore list'.
Or just keep LD-Log FREE installed

Sail Mode *

* In which app versions may I use sail mode?

LD-Log / LD-Log FREE: Sail mode optional - for activation and usage see following
Sail-Log: Sail mode is always active - for usage see following
Geo-Log: Sail mode can not be used

What is the sail mode good for?

The sail mode offers an intuitive way to keep a complete nautical ship's log. When activated, all respective logbook entries are available in the trip-, route-, and waypoint-editing for direct input or as predefined selection. Furthermore in the trip- route- and waypoint-display additional relevant data like distance under sail / engine, logbook entries and others will be shown.

How do I activate the sail mode?

In the main settings (option button in the app title bar -> settings) at the bottom. If you do not want to solely use the app in sail mode, you may set the sail mode per trip instead: trip options -> edit trip info -> trip settings.

How can I set additional sails to select from in the waypoint logbook entries?

If you are using more or other sails than the preset fore and main sails (e.g. on a ketch, a traditional sailer, etc.), you may add them in the sail mode settings (located in the main settings at the bottom). Enter the sail names comma separated into the corresponding dialog (custom fore sails / custom mainsails), e.g. 'Inner Jib, Outer Jib' as fore sails and 'Mizzen, Mizzen Reef 1, Mizzen Reef 2' as mainsails. They will then be available in the waypoint logbook entries for selection under 'custom fore sails' and 'custom mainsails'.

Where can I change the units for wind strength and temperature that are used in the waypoint logbook entries?

In the sail mode settings (located in the main settings at the bottom).

Where can I set the type of foresail (single sails / rolling genua / rolling jib) that is used in the waypoint logbook entries?

In the sail mode settings (located in the main settings at the bottom).

How can I create custom templates for my trip, route or waypoint logbook entries?

For some recurring logbook entries it might be useful to create custom templates for quick reutilization, e.g.

Boat details, crew lists etc in the trip logbook entries
Events like mooring, departing, tacking, jibing, anchoring etc. in the waypoint logbook entries

The template functions you'll find in the trip, route and waypoint editing respectively.
For more information on template creation and reutilization see EDITING.

Warning Messages

What does the warning message mean, that the logging function has been blocked?

The app has determined, that the logging function could not be called and as such future waypoints may not be recorded.
Probably a special power saving function is active on your device, that blocks regularly scheduled tasks, e.g. the Asus Auto-Start Manager. Those - normally quite useful - functions prohibit apps that are dependend on scheduled background tasks from working reliably. Deactivate those power saving functions, or better: Add the app as an exception, if there is such a possibility (for example in Asus Auto-Start Manager: open app 'Auto-Start Manager' -> tab 'Downloaded Apps'-> in list look for the app -> set to 'allow').

What does the warning message mean, that the logging function has been blocked in standby mode?

The app has determined, that the logging function hasn't been called as many times as expected and as such a number of waypoints could not be retrieved.
Probably a special power saving function is active on your device, that blocks regularly scheduled tasks in standby mode, e.g. the Sony Stamina-Mode. Those - normally quite useful - functions prohibit apps from working reliably in the background. Deactivate those power saving functions, or better: Add the app as an exception, if there is such a possibility (for example in Sony Stamina-mode: Settings -> power management -> Stamina Mode -> apps active in standby).
If you receive this warning message, but you cannot find a configurable power savings mode, then possibly a restriction is directly implemented into the Android system like on some Samsung devices with Android versions 5.0 and up. In this case try the advanced options 'Use Alarm Clock Function' in the log settings. Read more under LOGGING -> What is the advanced option 'Use Alarm Clock Function' good for.
In case you've tried the above settings without success, read more under LOGGING -> What else can I try, if waypoint recording is being blocked in standby mode.

What does the warning message mean, that the GPS showed no activity?

The app has determined, that during waypoint recording there has been no change of the GPS status and as such a number of waypoints could not be retrieved.
Under normal circumstances this can only happen, if another app has already started the GPS and at the same time there has absolutely no GPS signal been available during recording time.
Therefore it seems most probable that the GPS has been blocked by some power saving mode, e.g. the Android own 'power saver' under Android 5.0 up. Deactivate the appropriate power saving function, or better: Add the app as an exception, if there is such a possibility.
This is how you deactivate the 'power saver' in Android 5.0 up: System Settings -> Battery -> Options Button -> Battery saver -> switch off & set 'Turn on automatically' to 'Never'.

What does the warning message mean, that the GPS has been deactivated?

The app has determined, that during waypoint recording the GPS has been deactivated and as such a number of waypoints could not be retrieved.
If you did not manually switch off the GPS or set the location mode to 'battery saving', there might be a power saving mode active on your device, that automatically deactivates the GPS in standby mode. Deactivate the appropriate power saving function, or better: Add the app as an exception, if there is such a possibility.
This is how you correctly set the location settings: System Settings -> Location -> set to 'On' and set the mode to either 'high accuracy' or 'device only'.

Miscellaneous

Why does the app not record altitude information?

Though theoretically possible, the retrieval of altitude data solely by using GPS satellite information is too imprecise to be useful.
Altitude- or elevation-data with a suitable precision can only either be retrieved by using a geo-data-provider (which is not applicable for an offline-app) or through a device-integrated barometer (this possibility might be considered in the future, if integrated barometers become more popular).
You'll have the possibility, however - e.g. through GPX- / KML- / KMZ-import in Google Earth - to get a precise elevation profile subsequent to your trip.

Can I uninstall LD-Log FREE, if I installed one of the full versions?

Yes, you should do that in order to free storage space. In advance make sure that you imported all trips from the free to the full version if desired (after installing the full version go to the main option 'Saved Trips' there). It is highly recommended to also delete the whole folder 'LD-Log FREE' afterwards. Especially maps storage in the subfolder 'maps' but also unused image files may take quite some storage space that should be freed. You might want to backup this data on your computer and/or transfer some files to the full version's app folder in advance, in case you'd like to access some data like offline maps, screenshots etc. at a later time.

LD-Log / Geo-Log / Sail-Log - Manual & Help - v 8.5.1

Contents

1.) Definitions

2.) Beginner’s Guide

a) Basic Settings:

b) Logging:

c) Viewing / Editing:

d) Saving, Exporting and more

3.) Basic Operation

4.) Recommendations

5.) Notes / FAQs

Logging

Why are waypoints logged irregularly or not at all, when my device is in standby mode?

What would be a reasonable waypoint interval for my usage?

Is it possible to log with intervals less than one minute?

Why has the waypoint interval of 30 seconds been removed?

Is there a maximum number of waypoints?

Does the minimal waypoint distance also apply to manual waypoints?

What does waypoint-timeout in the advanced log settings mean?

May I record waypoints depending on my speed when logging?

How does the log start scheduling work?

What are the advanced GPS accuracy settings good for?

What is the advanced option 'Waypoint Time Source' good for?

What is the advanced option 'Use Alarm Clock Function' good for?

What else can I try, if waypoint recording is being blocked in standby mode?

What is the advanced option 'Use Samsung Galaxy S4 Fix' good for?

What is the advanced option 'Keep GPS WakeLock On' good for?

Can I use the app together with an external GPS device (e.g. over Bluetooth)?

What is the advanced option 'Bluetooth GPS App Control' good for?

Presets: Which log settings are stored?

Why is only the active (last) route being recorded, even if I selected a different one at log start?

Waypoints

How can I quickly add entries to the last waypoint?

What is the difference between standard waypoints and waypoints with activated travel-log / logbook entry (event-waypoints)?

How can I add an immediate event-waypoint (with or without entries / photos) without having to wait for a GPS-fix?

What are the waypoint templates good for?

How can I change the timezone of waypoints?

How can I send a waypoint position via SMS or Email?

How can I navigate to a waypoint position with Google Maps Navigation?

How can I set a waypoint position as destination point?

How can I move waypoints to the previous route?

How can I split a route (move waypoints to a new route)?

How can I join two routes?

How can I alter the geo location of a waypoint retrospectively?

How can I adjust the time of a waypoint retrospectively?

How can I convert trackpoints to waypoints for the current route?

How can I convert waypoints to trackpoints for the current route?

Destination Points

Where do I find my trip destinations?

How can I create a new destination?

How can I import destinations from a KML file?

What to consider when importing destinations from KML?

How can I edit name and coordinates of a destination retrospectively?

How can I load a destination as the trip-destination (current destination)?

How can I remove the current destination?

How can I export my destinations as KML file?

How can I finally delete a destination?

How can I finally delete all destinations?

Track

What does the tracking function do?

How do I start track recording?

What are the track settings good for?

For which situations is the tracking function suitable?

My device is always on charge, may I track infinitely?

Tracking is activated and logging started, but I don't see any progress displayed?

Display

Why are some longer titles and descriptions truncated in the trip-/ route and waypoints-displays?

The displayed number of waypoints on the route-screen is followed by some letters and more numbers - what do they mean?

The displayed GPS accuracy of the last waypoint on the route-screen is followed by some letters and more numbers - what do they mean?

In the waypoint list I see entries that are colored green, orange/red or light orange - what do they mean?

Where can I set the default number of waypoints shown in the waypoints list?

How can I view added waypoint distances for a route in the data row of the waypoints list (output like in a logbook)?

How can I only display event-waypoints in the waypoints list?

How can I hide the descriptions for standard waypoints in the waypoints list?

How can I hide the data row in the waypoints list?

How can I hide the photos in the waypoints list?

How can I display names and descriptions of event waypoints in full length in the waypoints list?

Map View

How do I get to the map view?

What do the symbol buttons above mean?