Adjusts the color of your display based on the time of day.
f.lux makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.
Ever notice how people texting at night have that eerie blue glow? Or wake up ready to write down the Next Great Idea, and get blinded by your computer screen? During the day, computer screens look good - they're designed to look like the sun. But, at 9 p.m., 10 p.m., or 3 a.m., you probably shouldn't be looking at the sun. It's even possible that you're staying up too late because of your computer. You could use f.lux because it makes you sleep better, or you could just use it just because it makes your computer look better.
Tell f.lux what kind of lighting you have, and where you live. Then forget about it. f.lux will do the rest, automatically.
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92 Reviews of f.lux
Most helpful
The only minor complaint I have is with the "you're getting up in x hours" nag-ifications. We really need the option to disable those as I don't want a virtual mother telling me it's past my bed-time :P
The app is based on solid science and the interface is exceptionally polished. The ability to tweak settings is well thought out and incredibly useful. I tweaked the color temps, especially the default sunset color. The darkroom mode is something I hardly ever need (back in the day, I worked in darkrooms and had a home darkroom), but it's also great to have when one needs it. (Note: I do wish that that mode were tweakable.) The devs were smart enough to make f.lux disable itself when Photos is in use. [I haven't seen what happens if other color-dependent photo or art apps are in use.]
One of the best apps I've used, and I've been on Apple gear for three decades. Kudos to the devs!
Highly recommended