Night light is an open-source app which uses KCAL to adjust blue light intensity
of the display colors, so that viewing the screen at dark becomes pleasant for
the eyes, and help you fall asleep faster (this is what science have proven
so...).
''Features''
*Control blue/green light filter intensities to your liking.
*Or, control the color temperature of the display.
*Quick Setting tile for easy toggling on/off night light anywhere.
*Automatic switching on/off night light at user specified timings.
* Supports sunset/sunrise timings. (Limitation:Once sunset/sunrise times are set, Night Light will be toggled every day at that time. Calculating sunset/sunrise times everyday and setting times based on it is not supported as of now.)
*Create profiles, and then apply it with one tap, or let other apps (like Tasker) do it for you.