Left Off is described as 'Don't forget where you left your phone, headphones, car, bag... Left Off tracks your added Bluetooth devices and automatically records your location when they're disconnected. You can also record locations manually and with photos, turning important places into your own memory map' and is an app in the backup & sync category. There are more than 10 alternatives to Left Off for a variety of platforms, including Android, Web-based, F-Droid, Android Tablet and iPad apps. The best Left Off alternative is Prey, which is free. Other great apps like Left Off are FindMyDevice (FMD), Find My, Find My Device and PhoneTrack.