Red Moon (software)

Red Moon is a free software^[1] application for the Android operating system, designed to filter blue light from the device's display, helping reduce eye strain during night-time use and disruption of sleep patterns. It allows independent adjustment of colour temperature, luminosity and filter level, making it also possible to lower the effective screen brightness below the usual minimum brightness level of the device. Red Moon does not require root.^[1]

Red Moon

Original author(s)	Marien Raat[1]
Initial release	9 June 2015; 9 years ago (2015-06-09)
Stable release	4.0.0[2]  / 14 August 2022; 2 years ago (14 August 2022)
Repository	github.com/LibreShift/red-moon
Written in	Kotlin
Operating system	Android
Size	3.9 MB
Available in	27 languages[3]
List of languages English, Finnish, French, German, Italian, Japanese, Korean, Norwegian, Portuguese, Spanish, Ukrainian, Turkish.
License	MIT and GPLv3[1]

See also

• Free and open-source software portal

• List of free and open-source Android applications
• Redshift (software)
• Night Shift (software)
• Electronic media and sleep
• Light effects on circadian rhythm
• Delayed sleep phase disorder