A free program for Android, by Phone Lock Utilities Apps.

Anti-theft alarm is the best tool to keep your mobile devices safe from theft and loss. It helps you to protect your devices from the wrong passwords and the criminals who may try to steal your phone.

The app uses the motion detection sensor to detect any movement and then triggers an alarm. This will alert you and you can then take the necessary actions to stop the theft. 

How does it work?

The Anti-theft alarm app uses the motion sensor of your device to detect any movement. When the device is moved or when the charger is unplugged, the alarm will be triggered.