Sonic Grenade is an app aimed for crowd control and playing pranks on friends.Connect the phone to a stereo and turn up the volume. The app generates a very high frequency sound that is really annoying and headache producing. You can use the application standalone. Hide the phone somewhere and play a prank on someone.
Disclaimer:
Use this app sensibly. Don’t over amplify. Playing any sound or music at a high volume for an extended period of time can damage hearing. Pico Brothers are not responsible for any damages resulted from this app.
Click below to download