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 9PM, 10PM, or 3AM, you probably shouldn't be looking at the sun.
f.lux fixes this: it makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.
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.
f.lux makes your computer screen look like the room you're in, all the time. When the sun sets, it makes your computer look like your indoor lights. In the morning, it makes things look like sunlight again.
Tell f.lux what kind of lighting you have, and where you live. Then forget about it. f.lux will do the rest, automatically.
f.lux also supports Philips Hue smart lighting system. Lightbulbs can be synced to your f.lux settings to create a surrounding environment that's more friendly to sleep.
Comments and Reviews
Just an amazing tool for your eyes' health
This app completely resets Windows calibration settings and the developers aren't willing to fix it even though the issue has been oepnly addressed on their forum multiple times. This makes it completely unusable for me since all my black colors turn to grey and if you're using Windows calibration, you won't be able to use it neither.
A customizable time-based blue light filter. The only feature I wish it had was a schedule based on the day of the week, as on weekends I stay up late and don't want the filter to activate.
broken on linux for several years
A wonderful program and will always be my favorite screen dimmer.
Windows 10 Night Light feature did not provide sufficiently warm color temperature. f.lux also surprised with a non intrusive reminder about my wake-up time.
It works great! It changes the colors of the screen during the day.