This app is an app to prevent erroneous operation by turning off the screen. When you put your smartphone in your bag or pocket, your finger may touch the screen and make an unexpected mistake. It is an application to prevent it. Besides, when you finish using your smartphone and put it on your desk, it's dangerous to leave the screen on, and you don't want people to see it. But if you press the power button frequently, the deterioration of the power button will progress. Even in such a case, t