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Life & fun · January 7, 2014

f.lux

Adjusts your computer's display to adapt to the time of day

f.lux launched on January 7, 2014 with 1,353 votes, #1 of 1,173 launches that month and more than 99% of that year's launches. The site was still online in September 2026, 12 years on.

Visit justgetflux.com ↗f.lux alternativestop 1% of January 2014

In plain words

f.lux automatically adjusts a computer's display color based on the time of day, showing warm tones at night and daylight-like colors during the day. It runs on Linux, Windows, and Mac as a menu bar application. The software is designed for users concerned with how screen lighting affects their health and sleep patterns, helping reduce eye strain and blue light exposure in evening hours.

written from the facts on this page · September 2026

From the sources

f.lux is makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.

Is your computer keeping you up late? f.lux is a free download that warms up your computer display at night, to match your indoor lighting.

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…from justgetflux.com

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    Auto adjust your iOS display based on the time of day

  • f.lux2014 · justgetflux.com · ▲72

    color of your computer's display adapt to the time of day

  • f.lux2014 · justgetflux.com · ▲10

    Makes your computer's display adapt to the time of day

  • Brilliance2016 · brilliance.site · ▲260

    f.lux for Philips Hue bulbs

  • Black Light Pro2018 · michelf.ca · ▲88

    Color effects on a schedule

  • SolaceFeb 2026 · theodorehq.com · ▲171

    macOS gives you three appearance options: Light, Dark, or Auto. Auto follows sunset, which is a surprisingly blunt heuristic. It doesn't account for season (dark mode at 3:50pm in December, light mode at 9pm in June), and it has zero awareness of actual conditions outside. Overcast and dark at 2pm? Your Mac doesn't care. The deeper problem is that macOS treats appearance, wallpaper, and colour temperature as unrelated settings. You end up stitching together separate tools that don't know about each other, or you just live with the defaults and accept the friction. Solace tries to solve this…

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