Twilight - for a long time scientists have proved that bright light affects the human brain, thereby knocking the rhythm of life. You have been such a problem, you have decided to read news on a tablet before bed, then put it aside, and the dream vanished. So because of the light that was hitting you in the eye, you don't want to sleep. This app aims to solve this problem. You can configure it in such a way that at a certain time in a certain time zone, your device changed the screen brightness. What to do it will be as you want. In fact the application is very simple, but can save you a healthy sleep and vision.