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




Red Moon is described as 'The app is free on F-Droid and on GitHub but you can buy it on the Google Play Store to support the developer' and is a popular color temperature tool in the os & utilities category. There are more than 25 alternatives to Red Moon for a variety of platforms, including Windows, Linux, Mac, Android and Wayland apps. The best Red Moon alternative is f.lux, which is free. Other great apps like Red Moon are Redshift, LightBulb, gammastep and SunsetScreen.
Software that makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.




Redshift adjusts the color temperature according to the position of the sun. A different color temperature is set during night and daytime.



Background application that adjusts screen gamma, making the colors appear warmer at night, reducing strain on your eyes.


Lightbulb is Windows-only, while Red Moon is Android-only.


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.
Whether you're a morning lark or night owl, SunsetScreen allows you to set the time of the sunset and sunrise, so you can have full control over your sleep cycle.



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.


CareUEyes is a very simple but useful program when it is about your eye care. The program comes with a very simple and clean interface and needs to technical knowledge. Even a novice computer user can download and use it easily.


Enjoy free cross-platform blue light reduction and PWM flicker-free brightness control with Iris mini. Minimalistic design, portable, and automatic for no-hassle, eyestrain-relief across all devices. Simply double-click to activate, perfect for every lighting condition.



The app filters the blue spectrum on your phone or tablet after sunset and protects your eyes with a red filter. The filter intensity is smoothly adjusted to the sun cycle based on your local sunset and sunrise times.



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



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.

Red Moon is Android-only, a platform which Redshift doesn't support.