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

wl-gammactl is described as 'Small GTK GUI application to set contrast, brightness and gamma for wayland compositors which support the wlr-gamma-control protocol extension. Basically this is the example from here: https://github.com/swaywm/wlroots/blob/master/examples/gamma-control' and is an app. There are more than 50 alternatives to wl-gammactl for a variety of platforms, including Windows, Linux, Mac, Android and Wayland apps. The best wl-gammactl alternative is f.lux, which is free. Other great apps like wl-gammactl are Redshift, LightBulb, Red Moon and Midnight Lizard.
It makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.

Adjust the color temperature of your screen according to your surroundings. This may help your eyes hurt less if you are working in front of the screen at night.
World's 1st instantaneous content-aware brightness control app that let your screen brightness adapt instantly and automatically to provide the most optimal viewing experience for your eyes.




Redshift Tray is a no-frills GUI for the screen temperature adjustment tool Redshift.



Velis Auto Brightness is a pretty powerfully adjustable auto-brightness app for your android device.




Velis Auto Brightness is the most popular Android Tablet alternative to wl-gammactl.
Reduces blue light and flicker for eye comfort, supports auto color temperature adjustment based on time, customizable modes, overlays, color and font options, docking station support, and accessible part-screen filtering for diverse needs.


CF.lumen - don't let your phone blind you! CF.lumen changes the colors of your Android device's display based on the position of the sun. With the default settings, your display will get a warmer tint (lower color temperature) when the sun is down, to look more like indoo.

To schedule Night Light so it turns on automatically, select Start > Settings > System > Display > Night light > Night light settings.

Form 1 Hour Software by skrommel, it can dim the screen by applying a transparent gray layer on top of your opened applications


