Trackbook Info Sheet My Location About About Trackbook running Trackbook not running Stop … swipe to clear map. Duration Distance Tracking stopped Tracking started Permissions granted. Unable to start Trackbook. Location is turned off. Acquiring current location. Last location: over one hour Source Accuracy Hello Trackbook App Icon Trackbook Movement Recorder for Android Trackbook cannot work without these permissions: LOCATION Trackbook needs accurate GPS location data to be able to record your movements. If the GPS data is not available or not accurate enough Trackbook uses location data from cell tower and WiFi triangulation. STORAGE Trackbook uses osmdroid, which caches map tiles on Android\'s external storage. You can find the map cache in the osmdroid folder on the top level of the user-facing file system. Got it! About Trackbook Movement Recorder for Android Version 0.1 ("The Great Gig in the Sky") Trackbook is a bare bones app for recording your movements. Trackbook is great for hiking, vacation or workout. Once started it displays your movements on a map. You can save your recorded tracks and share them with friends. Trackbook is free software. You can find the code on GitHub. GitHub is also a good place to file bugs or even to contribute, if you are interested. Trackbook is published under the MIT open source license. Trackbook uses osmdroid to display the map, which is also free software published under the Apache License. https://github.com/y20k/trackbook https://github.com/osmdroid/osmdroid https://opensource.org/licenses/MIT Which Permissions does Trackbook need? Permission INTERNET Trackbook needs to download map data from Open Street Map servers and therefore needs access to the internet. Permission ACCESS_WIFI_STATE and ACCESS_NETWORK_STATE Trackbook uses to draw its main map. osmdroid needs to know the current state of your device’s connectivity. I am not sure why though. On the other hand: These permissions are not harmful in any way. Permission ACCESS_COARSE_LOCATION and ACCESS_FINE_LOCATION Trackbook needs accurate GPS location data to be able to record your movements. If the GPS data is not available or not accurate enough Trackbook uses location data from cell tower and WiFi triangulation. Permission WRITE_EXTERNAL_STORAGE Trackbook uses osmdroid, which caches map tiles on Android\'s external storage. You can find the map cache in the osmdroid folder on the top level of the user-facing file system.