Blue Light Filter - Night Mode is a free Android app that can reduce the amount of blue light emitted by your smartphone or tablet.Blue light is a specific range of the light spectrum that causes a number of health problems for your eyes. The American Academy of Pediatrics recommends that children and adults should use the app to reduce their exposure to blue light and help them achieve better sleep.In addition, the app can help users who have problems with their eyesight, such as eye strain, eye pain, redness, and blurry vision.The app can also be used to reduce the effects of blue light on your phone's screen, such as the change in color and the reduction in resolution.The app can be used with any Android device that is equipped with a front camera.