f.lux 3.9

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.

What's new in f.lux 3.9:

  • f.lux can go warmer than 3400K now, down to 2700K. Or even 1200K if you really want it to.
  • Support for color profiles from a hardware calibrator
  • Movie mode. This setting warms up your display, but it preserves shadow detail, skintones, and sky colors better than f.lux’s typical colors. It lasts 2½ hours, which lets you watch most feature films
  • Disable until morning, for late-night crunch mode
  • A new “darkroom” mode, which inverts colors and gets very red
  • A map to help you find your location
  • Hotkeys to dim your display (Alt-PgDn, Alt-PgUp) late at night, so desktop users can dim too
  • A hotkey to disable/enable f.lux quickly: Alt-End
  • If you have a laptop, f.lux gets warmer when your backlight dims, like an incandescent lamp
  • A simple schedule for Philips Hue, so you can f.lux your house

Some more fixes

  • Safe mode for playing video games without hiccups
  • Bugs fixed with Intel chipsets
  • Smoother animations and fading
  • Better support for Windows 7 & 8

Download: f.lux 3.9 | 583 KB (Freeware)
View: f.lux Home page | Release History

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Been using this for a few months and love it. One feature I would like is to be able to disable it for secondary displays, like my TV.