Most anti-theft apps stop mattering the moment a thief does a factory reset. RecoverMyDevice blocks that — once you've set it up on your own phone, a thief can't wipe it and erase your tracking data before you find it. — Real-time GPS tracking — SIM-change detection (alerts you the moment someone swaps the SIM) — Remote lock & alarm — Web dashboard — track from any browser — Owner-activated factory reset block Free forever tier. Pro is $3/30 days or $30/year. Built solo, for Android.