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μlogger [micro-logger] is an android application for continuous logging of location coordinates, designed to record hiking, biking tracks and other outdoor activities. Application works in background. Track points are saved automatically at chosen intervals or manually and may be uploaded to dedicated server in real time. This client works with μlogger web server. Together they make a complete self owned and controlled client–server solution.

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Features

Screenshots

<img alt="main" src="fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot1.png" width="30%"> <img alt="waypoint" src="fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot2.png" width="30%"> <img alt="settings" src="fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot3.png" width="30%">

Self-check

In case of problems, you may go to Self-check menu. It will check whether all necessary permissions are granted and all settings are properly configured.

<img alt="self-check" src="fastlane/metadata/android/en-US/images/phoneScreenshots/screenshot7.png" width="30%">

Help

ledtrackingsynchronization
status greenon, recently updatedsynchronized
status yellowon, long time since last updatesynchronization delay
status redoffsynchronization error

Automating

Location permissions

Starting with Android 11, if you want to use the application without user interaction (automating, autostart on boot), it is necessary to grant application background location permission ("Allow all the time" option). In case of automation the controlling application must also have the same background location permission granted. In all other cases, when you start tracking from app screen, it is enough to grant "Allow only while using the app" option.

Battery optimization

For reliable work battery optimization should be turned off for µlogger. Otherwise location service working in the background may be stopped by the operating system. On Android 12+ the application will refuse to start from background without user interaction (automation, autostart) with battery optimization turned on.

App settings guidelines

Finding the optimized settings for your practice can be a bit complex and may require you to do a lot of testing. As a first approach, here are some parameters that offer a good compromise between precision and the number of points acquired by your server.

ActivityTimeDistanceAccuracyProvider
hiking/cycling30 seconds100m100mGPS + Network
motorbiking1 minute500m50mGPS + Network

They may not be optimal, depending on your feelings, and you will have to adapt them.

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License

License: GPL 3.0