Blue light may suppress the production of melatonin, the sleep hormone. Red Moon filters out blue light and dims your screen below the normal minimum, so you can use your phone comfortably at night.
Features:
- Schedule Red Moon to run from sunset to sunrise, or at custom times.
- Use the default color profiles, or set custom color, intensity, and dim levels.
- Automatically pause in apps secured against overlays, or those you choose.
- Quickly start, stop, and switch profiles via notification, tile (Android 7.0+), or widget.
Permissions:
- Modify system settings: To automatically lower the screen brightness when the filter is on
- Approximate location (network-based): To determine the sunrise and sunset at your location. This will only be used when you configure Red Moon to automatically start at night.
- Draw over other apps: To change the color and brightness of the screen in all apps
- Run at startup: To restore the previous filter state at startup
Screenshots
What’s new
### Added - Root Mode BETA (@notjuliee). BETA means it is not tested on many devices. Make sure you can reboot your phone without looking at the screen, just in case. - Initial/incomplete support for Android 12 (@AdamNiederer). - Start/stop times can be set to sunset/sunrise individually - Settings screen with all non-profile preferences - Hebrew translation (@Shopimisrel)
### Changed - All non-filter preferences moved to their own screen - Revert top switch toggle back to a floating button - P
How to install
Download the APK from the button at the top of this page.
Allow “Install unknown apps” for your browser or file manager only, not for every app.
Open the downloaded file and confirm the installation.
If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.
Data safety
Every file is checked against its published SHA-256 before it is listed.
Files are scanned for malware on every update.
The permissions each app requests are listed on its own page.
Read the full safety policy for how we test, flag, and delist files.
Frequently asked questions
What is Red Moon?
Screen filter for night time phone use
Who develops Red Moon?
Red Moon is developed by LibreShift.
Which Android version does Red Moon require?
Red Moon requires Android API 14 or later.
What is the current version of Red Moon?
The synchronized F-Droid version is 4.0.0.
Which license does Red Moon use?
The signed F-Droid metadata lists GPL-3.0-or-later.
