Please blocking Blue Light and protect your precious eyes! Status bar, Widget, Schedule and all convenient functions are free. Blue Light Filter function. 18-color blue light filter for protect eyes. When adjusting the screen dimmer automatically apply blue light filter. Blue light filter is faster speed because I only put essential function. This app is free. 🌟 Key Function - Blocking the blue light that reduces eye fatigue - Blue Light Filter adjustment function - 18 kinds of colors to ch