f.lux

Desktop app that warms the screen color after sunset and returns it to daylight color in the morning.

The maker's own words say it acts on blue light.

What the maker says, in four columns

Lit: the maker's own words say the app acts on it. Outlined: mentioned, not claimed. Blank: not stated.

“Some older monitors did not handle color changes well and would reset to white before accepting new settings.”

Flicker comes up only as a troubleshooting topic, not as something the app reduces.

Not stated by the maker.

“(But if you're on a laptop, you should mostly dim your backlight to keep contrast.)”

Advice to use the laptop backlight, not an app feature.

“it makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.”