▽ Free Screen Filter App to Protect Your Eyes You can reduce the strain on your eyes easily. It is simple but effective! All you have to do is launch this app. ▽ Screen Filter with Natural Color This app's filter has a natural color so you can read news, emails and websites clearly. This app doesn't dim the screen but adjusts the screen color to reduce blue light which causes strain on your eyes. This natural color filter makes your smartphone screen shift to the screen for night. ▽ Easy Opera
