BlueLight Filter - Eye Care - Night Mode description

Bluelight 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. BlueLight Filter protects your eyes and reduce glare and strain. BlueLight Filter doesn't dim your screen light but adjust screen color and Prevent the screen from radiating BlueLight which causes strain on your eyes.

Features of BlueLight Filter:
● Free screen filter app to protect your eyes
● It is simple but effective!
● Natural colors effects
● Filler capacity upto 90%
● Adjust brightness according you - Built-in screen dimmer
● BlueLight filter for optimal eyesight - Eye Protector From Screen Light
● Easy to use, only tap one button to switch on/off then it will work pretty perfect
● It's Free!

Tips:
● Before installing other app, please turn off or pause this app to enable installation.
● When taking screenshots, please turn off or pause this app in case screenshots use the app effect.

Reference::
https://en.wikipedia.org/wiki/Effects_of_blue_light_technology

All you have to do is launch this app. Its approved by research Blue Light at night, has a stronger negative effect on sleep. you can see the link given in reference.