A native Android app. (Not on Google Play yet, but you can download it to your device, then go to "downloads" or "files" from where you should be able to install it )
Showing / hiding yourself on multiple tracker sites with a single button click. Imagine you go to lunch for example, and don't want to be disturbed, then you can hide yourself on all sites with a single button click.
Continuous background tracking that is it uploads the users position in the background (such as when the screen is off). (Only on the android-native-app.)