Games and Apps are running while your screen is on and unlocked. This app allows you to lock and blackout screen without stopping the game/app process. In this case, you can put your smartphone in your pocket and walk without fear of unwanted screen presses. Also, you can save battery life by putting the screen in a lower power state. For Amoled screen's devices, this means close to zero battery drain while, in LCD screens, the lowest brightness will help a lot to save battery. For devices wi