Night screen main goal is to reduce the brightness of your screen lower than you can achieve with the default settings. This application applies an overlay filter that acts as a dimmer to darken the screen. It helps to avoid headache and eye pain in a dark environment or at night. Features:- easy to use;- can automatically set default brightness settings in Android to the minimum;- restore default brightness settings after stop the app;- keep the screen on while the app is running (optional) ;- amazing blue light filter to help you have a better sleep (optional) - supports dimming the transparent navigation bar in Android 4. 4 and higher;- extra-content: auto-enable & disable feature and one-click widget.