References : https://play.google.com/store/apps/details?id=jp.ne.hardyinfinity.bluelightfilter.free

APK Real demo: https://www.dropbox.com/s/oxudbkp4wcdy1b4/EyesCare.apk?dl=1

Blue light emitted by phone screen is the major cause to eye strain and vision loss. Now by this super application: Bluelight Filter, you can easily get rid of these problems.
Compared to other apps, Bluelight Filter has the following advantages:
1. Reduce the blue light to relieve eye fatigue and protect your eyes;
2. Provide 5 different filter colors for you to choose, the filter strength can also be dynamically adjusted;
3. Very stable, greatly reducing the possibility of Force Close;
4. Completely free and Easy to use. Also provide an entrance in the status bar, so that you can operate it easily.