Fool your friends by pretending to shave with your phone.
This electric razor prank makes realistic shaving sounds. Enable the razor by pushing the green button. Then hold your phone to your face and subtly touch the screen. This will change the sound so it sounds like you are moving a real shaver through your facial hair.
This is of course a prank app and no real beard will be shaved by this.
Updated to comply with Google Developer Program policies.