This prank app enables you to easily freak-out your friends and family. Just give them your phone, and play a little bit with your watch :)

You may start the prank from your watch and wait for them to just tap on the phone’s screen, or you can freak them out immediately.

What’s more fun, their reaction will be recorded on your phone using your phone’s front camera.

Scary image and crazy sound will appear on your mobile screen. Be careful, the effect can be damaging.