Burglar Alarm Free Lets You Know When Your iPhone Is Moved
You want to leave your iPhone on the table, charging, while you go and get something you need. If you are afraid that some one might steal your iPhone when you are away, here is an iPhone app to alert you. Burglar Alarm is a free iPhone App that will trigger a loud alarming sound when some one moves the device.
You might never need this app to catch a thief. Still you can just have fun with it, by surprising your partner or a friend by asking them to bring your iPhone to you. Or you could stop your kid from playing with your iPhone when you are busy and not noticing. Just set a PIN and arm your device using Burglar Alarm. Upon motion detection, the app will sound an alarm.

Burglar Alarm works with iPhone and iPod Touch. Requires iPhone OS 2.2.1 or later.
It’s a bad imitation of THIEF BUSTER. It’s not free but it’s the real thing. It’ll keep on restarting the app if you push the Home button while you don’t enter the passcode!. And plus, you can not set the volume off!
I use it everyday. I really recommend it.
Regards