Version 2.2.3 of the Lockitron iOS app was just approved - we highly recommend anyone on 2.2.1 or 2.2.2 get this build immediately as it resolves a bug whereby the app remains connected to Lockitron in the background thus draining both Lockitron’s battery as well as your phone’s battery.
I’m glad they approved it! It was getting a bit old turning on and off my BT. Whew! Thanks!