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.




SunsetScreen is described as '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' and is a color temperature tool in the system & hardware category. There are more than 50 alternatives to SunsetScreen for a variety of platforms, including Windows, Mac, Linux, Android and Wayland apps. The best SunsetScreen alternative is f.lux, which is free. Other great apps like SunsetScreen are Redshift, LightBulb, Solace and Red Moon.
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.


Automatically changes Mac appearance using real-time weather, sunlight, and time data for light and dark modes, dynamic wallpapers, and color temperature, with on-device privacy, menu bar access, no subscriptions, and no analytics for seamless daily comfort.




The app is free on F-Droid and on GitHub but you can buy it on the Google Play Store to support the developer.




RedshiftGUI changes the color temperature of your monitor to better match that of your surrounding. This means that it sets a cooler color temperature during the daytime (due to natural lighting) and sets a warmer temperature at night (due to indoor lighting). Similar to f.



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.





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.



What sets sunset screen apart is that the day/night times are entirely user controlled, NOT location-based which is not good for everyone. All alternatives including flux which do not offer a user-controlled day/night time setting should not be considered good alternatives!