NOTE: This is not a real hand grenade! It will not turn your Android device into an explosive weapon. It is just a simulation! This app has a picture of a hand grenade on it. When you tap on the screen, a five second timer will begin. When the timer goes off, a vibration and explosion sound will play. Just a fun little app to play around with. You can use it to play a game like hot potato where you start the timer and then toss your phone back and forth (gently)! Don't worry, it doesn't turn your phone into an actual grenade! Your phone will not explode. It's just a game!