f.lux
Free
f.lux is a cross-platform computer program that adjusts a display's color temperature according to location and time of day.
Red Moon
Open Source
Red Moon is an android screen filter app for night time phone use.
Twilight
Freemium
Twilight app makes your device screen adapt to the time of the day. It filters the flux of blue light emitted by your phone or tablet after sunset and protect…
