Flux
Flux is a macOS display utility that automatically adjusts your screen color temperature through the day to reduce blue light at night.
What is Flux?
Flux is a native macOS utility for adjusting your display’s color temperature based on the time of day and your lighting conditions. It helps people who work late, read at night, or prefer a warmer screen after sunset by shifting the display away from a bright daylight tone in the evening and returning it toward daylight colors in the morning. Common uses include reducing nighttime glare, making screens feel more comfortable in dim rooms, and temporarily disabling the effect for color-sensitive tasks or full-screen apps. Flux also lets you choose indoor lighting presets and location-based scheduling so the changes happen automatically. It is published by Michael Herf and is designed as a focused desktop helper rather than a full system management suite.
Key features
- Adjust the display color temperature automatically throughout the day
- Set your location so lighting changes follow local sunrise and sunset times
- Choose lighting presets that match indoor environments
- Temporarily disable color changes for an hour or for specific apps
- Pause or quit the effect when doing color-critical work
- Run quietly in the background from the menu bar
Review app leftovers with diCleaner
Inspect caches, support files, containers, and login items before cleaning.
Safety overview
Status: Mostly safe
Flux is legitimate display-color adjustment software for macOS and its background behavior is normal for that purpose. It changes how colors are shown on your screen, so images and video may look warmer than usual while it is active. That is expected, but it can interfere with photo editing, design work, display calibration, or any task where accurate color matters. If you rely on exact color, pause Flux before that work and turn it back on afterward.
Recommendation: Keep Flux if you use it to make your screen more comfortable at night or to automate warmer evening colors. If you do not use those adjustments, you can remove it without affecting macOS itself. Before color-critical tasks such as editing photos, grading video, or calibrating a display, temporarily disable it so you see your normal screen colors.
Common paths
/Applications/Flux.app
Preference paths
~/Library/Preferences/org.herf.Flux.plist
Share your experience
Be the first to share your experience.