Download f.lux 3.9

After a long beta period, a stable version of f.lux has finally been released. This program adjusts the color of the screen to the position of the sun. For example, the screen is brighter during the day and when the sun goes down the color becomes ‘warmer’. Not only is this calmer for the eyes, it could even help with sleeping problems. The program helps find your location on Earth, so it knows exactly when the sun sets. F.lux is available for Windows, Linux, Mac and iOS, and is free to use. The new version adds support for a hardware calibrator and makes it possible to control Philips Hue lamps.

f.lux has been updated to a new version

It’s been a few years since f.lux got an update, but this new version is finally out of beta. We have a ton of new features and bugfixes to tell you about, and we hope you enjoy trying them out in the new version.

Big new cool stuff

• 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 fashion. 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