The app needs to be active for GPS to track your position and play sounds, it contains a Wake Lock API that prevents the screen from turning off during the walk but you will need to not manually lock your phone. It might also be helpful to set the Auto-Lock option in iOS settings to ‘never’ :
- Settings > Display & Brightness > Auto-Lock > Never
Troubleshooting GPS Issues
iOS
2. Please make sure that Safari ‘Allows’ your device to access location on all websites or ‘Asks’ for permission (Go to Settings > Safari > Location). Select either ‘Ask’ or ‘Allow’. These steps are shown in the accompanying image.
3. If you are still experiencing difficulties, then try resetting ‘Location and Privacy’ in the General menu section (Go to Settings > General > Reset)
Android
If you have an Android device that uses stock Android you can manage Location Accuracy by visiting Android Help Centre for instructions.
If you are using an Android/MIUI device (e.g. Xiaomi):