Screen Temperature

During the day computer screens look like the sun - but this is not good at night.

These apps adjust the colour of your computer display to the time of day - warm at night; sunlight during the day

f.lux

f.lux® software to make your life better f.lux makes the colour of your computer display adapt to the time of day, warm at night and like sunlight during the day. Available for Windows, Mac, iPhone/iPad or Android. https://justgetflux.com/

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Lux

LUX The original custom auto-brightness solution for Android. Lux works out of the box to provide superior automatic backlight adjustment. Choose from four automatic modes, or manual adjustment. Intelligent backlight adjustment means your display is never brighter than it needs to be.   http://www.vitocassisi.com/ https://play.google.com/store/apps/details?id=com.vitocassisi.luxlite&hl=en_GB

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Twilight

Twilight for healthy sleep. Essential app for dark reading. Harmonise your screen with the sun cycle. Blue light reduction for healthy melatonin production. http://twilight.urbandroid.org/

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