Get Better Sleep by Using f.lux on Your Mac, Win or Linux

f.lux changes the shading temperature of your PC’s presentation relying upon the time of day. Everything’s typical amid the day, however f.lux clients hotter hues after nightfall to coordinate your indoor lighting.

This free apparatus is accessible for Windows, Mac, and Linux, and it’s frequently utilized on portable workstations and desktops. In any case, f.lux can likewise be utilized on iPhones and iPads in the event that you escape, and there are comparative utilities accessible for Android.

What is Night Shift in iOS 9.3?

Night Shift, a major new feature iOS 9.3, is a display-based setting that lets you “warm up” an iPhone or iPad’s screen at night to cut down on blue light exposure. Similar to f.lux on the Mac, Night Shift will automatically change the color temperature of an iOS device’s display to reflect the time of day.

With Night Shift, an iPhone or iPad screen will look bright white with a blue-based lighting scheme during the day, but as the sun sets, that bright white will fade into a warm yellow that’s easier on your eyes and your circadian rhythm.

Reduce Eye Strain and Get Better Sleep by Using f.lux on Your Mac

The Theory Behind f.lux

The lighting of our general surroundings changes relying upon the season of day. Amid the day, we’re presented to splendid daylight that has a cool, blue shading temperature. This helps keeps us alert and influences our circadian rhythms. Around evening time, the splendid daylight is gone — rather, we’re utilizing indoor lighting that is for the most part dimmer and hotter. Our brains emit melatonin amid these darker hours when we’re not presented to daylight, making us get sleepier.

Yet, our PCs didn’t get the message. The hypothesis is that gazing at these brilliant, sun-like screens — late into the night or morning, the same number of us do — strains our eyes and hinders melatonin creation. Yes, a few PCs have brilliance sensors and will alter the screen shine contingent upon how splendid it is around you, however the shading temperature doesn’t change.

f.lux will utilize hotter hues during the evening than amid the day, making white hues show up more ruddy. The hypothesis is that taking a gander at a hotter showcase around evening time will diminish eye strain, and — on the grounds that you’re not gazing at a splendid, daylight like screen — cause your cerebrum to discharge more melatonin and help you get the opportunity to rest prior and rest better.

Simply take a gander at the blue gleam you see originating from a screen around evening time, and after that contrast it with the hotter, redder sparkle originating from a common light. f.lux intends to make that blue shine all the more a ruddy gleam. Here’s a decent outline of the Kelvin shading temperature scale, which is utilized to measure shading temperature.

How to Get Started With f.lux

f.lux is free to download and use, so you can try it out for yourself if you’re curious.

  • Windows, Mac, and Linux: Grab f.lux from the official website and install it.
  • iPhone and iPad: You’ll have to jailbreak your iOS device and get this software from Cydia if you desperately want it. Apple’s restrictions prevent software from doing this. However, Apple has its own very f.lux-like feature built into iOS 9.3 called Night Shift that you can use instead.
  • Android: You can get f.lux for Android, but it’s only available on rooted phones. Similar apps likeTwilight are available for non-rooted devices.

f.lux isn’t the kind of program you constantly fiddle with. Instead, you’ll want to set it up once and then mostly forget about it.

It will try to automatically detect your location, but it doesn’t work all that well. You’ll want to go into the Settings screen to enter a more precise location. You can also adjust the desired light temperatures and choose a slow transition speed, so the colors on your screen will gradually change over 60 minutes instead of 20 seconds. Remember, you won’t see any change until after sunset — or up to an hour before sunset, if you choose the Slow transition speed.

f.lux also has various extra features. For example, it can automatically adjust the colors of Phillips Hue lights in your house, as well. The Mac version can even automatically enable OS X Yosemite’s dark theme at night.

When You Might Not Want to Use f.lux

f.lux may not be something you’ll want to use all the time. If you’re a graphic designer who depends on accurate color reproduction for the work you do in Photoshop or another image-editing program, it will cause problems. When watching a movie or playing a game on your computer, you may prefer accurate reproduction of colors over the warmer colors f.lux provides.

To help with this, f.lux provides an easy option that allows you to quickly disable it for an hour or for an entire night. There’s also a “Movie Mode” option that lasts two and a half hours after you enable it. Asthe official FAQ puts it: “We designed Movie Mode to preserve sky colors and shadow detail, while still providing a warmer color tone. It’s not perfect on either count, but it strikes a balance.”

f.lux doesn’t make any permanent changes — after you disable it, it will go back to the same color calibration your monitor was set to use.

f.lux may seem very pink at first, so be sure to stick with it for a while if you decide to give it a try. As the official FAQ puts it: “On first use, it can take a while to adjust to the halogen settings. Try adjusting the color temperature sliders under Settings until you find one you like. Start with fluorescent or halogen and change it when your eyes adjust.”

This certainly matched my experience — at first, f.lux looked very pink. After fifteen minutes, it started to look normal. And, after disabling f.lux, everything looked very blue.

William Keener

William is a tech writer at Hacktoday. He's been writing how-to guides for about 4 years now and has covered many topics. He loves to cover topics related to Windows, Android, and the latest tricks and tips.

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