Automatically adjust screen color according to external light to protect eyes Don't be robbed of a good night's sleep! Blue light from your smartphone or tablet causes strain on your eyes and prevents you from falling asleep easily at night. This app adjusts your screen color to reduce the blue light and helps your eyes to relax, making it easier for you to fall asleep. Free Screen Filter App to Protect Your Eyes You can reduce the strain on your eyes easily. It is simple but effective! All