Red Moon (software)

Last updated
Red Moon
Red Moon logo.png
Red Moon Screenshot.png
Original author(s) Marien Raat [1]
Initial release9 June 2015;4 years ago (2015-06-09)
Stable release
3.4.0 / 13 February 2019;6 months ago (2019-02-13) [2]
Written in Kotlin
Operating system Android
Size 3.9 MB
Available in27 languages [3]
List of languages
English, Finnish, French, German, Italian, Japanese, Korean, Norweigan, Portugese, Spanish, Ukrainian, Turkish.
License MIT and GPLv3 [1]
Website github.com/LibreShift/red-moon

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 for 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.

Free software software licensed to preserve user freedoms

Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, not price: users—individually or in cooperation with computer programmers—are free to do what they want with their copies of a free software regardless of how much is paid to obtain the program. Computer programs are deemed free if they give users ultimate control over the software and, subsequently, over their devices.

Android (operating system) Free and open-source operating system for mobile devices, developed by Google

Android is a mobile operating system developed by Google. It is based on a modified version of the Linux kernel and other open source software, and is designed primarily for touchscreen mobile devices such as smartphones and tablets. In addition, Google has developed Android TV for televisions, Android Auto for cars, and Wear OS for wearables, each with a specialized user interface. Variants of Android are also used on game consoles, digital cameras, PCs and other electronics.

Current academic and medical consensus suggests there are no known health effects of day-to-day exposure to blue light, and it is not regarded as a cause of eye disease, eye strain, or disruptions to circadian rhythm, as distinct from any other frequency band of visible light. Despite the lack of scientific basis, numerous products and software claim to filter out blue light to prevent eye strain and sleep disruptions. It is illegal in the UK for a health practitioner to indicate to a patient that 400-450 nm blue light causes health effects or affects sleep. Harvard Health continues to support claims that blue light has a stronger negative effect on sleep.

See also

Redshift (software) application that adjusts the computer displays color temperature

Redshift is an application that adjusts the computer display's color temperature based upon the time of day. The program is free software, and is intended to reduce eye strain as well as insomnia.

Night Shift is a built in software feature of iOS and macOS. It was introduced into iOS in iOS 9.3 and into macOS in macOS Sierra 10.12.4. The feature changes the color temperature of the display towards the yellowish part of the color spectrum that reduces some of the blue light from the screen. Apple claims that the feature may help users have a better night's sleep by filtering blue wavelengths from the display. The feature is similar to the functionality f.lux provides.

The use of computers by children and adolescents before bed has been associated with a reduction in the hours of sleep experienced by frequent users, along with a decreased quality of sleep, in most cases. The results of computer use at night have been linked with tiredness.

F-Droid Repository for free and open source Android apps

F-Droid is a community-maintained software repository for Android, similar to the Google Play store. The main repository, hosted by the project, contains only free libre software apps. Applications can be browsed and installed from the F-Droid website or client app without the need to register for an account. "Anti-Features" such as advertising, user tracking, or dependence on nonfree software are flagged in app descriptions. The website also offers the source code of applications it hosts, as well as the software running the F-Droid server, allowing anyone to set up their own app repository.

Google Play Digital distribution service by Google

Google Play is a digital distribution service operated and developed by Google LLC. It serves as the official app store for the Android operating system, allowing users to browse and download applications developed with the Android software development kit (SDK) and published through Google. Google Play also serves as a digital media store, offering music, books, movies, and television programs. It previously offered Google hardware devices for purchase until the introduction of a separate online hardware retailer, Google Store, on March 11, 2015, and it also offered news publications and magazines before the revamp of Google News on May 15, 2018.

  1. 1 2 3 "LICENSE". Github. Retrieved 2 September 2019.
  2. ↑ "Releases". Github. Retrieved 2 September 2019.
  3. ↑ "Red Moon Translations". Red Moon Translations

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