Alternatives to f.lux for all platforms with any license





Show 7 less popular platforms
  • Redshift icon


    Redshift adjusts the color temperature according to the position of the sun. A different color temperature is set during night and daytime. During twilight and early...

    Free Open Source Windows Linux BSD

    • It adjusts colours the way I expected it to. There is a simple and efficient gui applet (redshift-gtk) available, and it supports interesting commandline options Guest • Apr 2017 • 2 agrees and 0 disagrees Disagree   Agree
    • Worked immediately in Ubuntu 14.04. Not able to adjust settings yet and I wonder about RedshiftGUI but this'll do for now. Guest • Sep 2017 • 1 agrees and 1 disagrees Disagree   Agree
  • SunsetScreen icon


    Whether you're a morning lark or night owl, SunsetScreen allows you to set the time of the sunset and sunrise, so you can have full control over your sleep cycle.

    Free Personal Windows

    • Can set also brightness level to change automatically. Can set the time to change to night time yourself. bklampflOct 2016 • 3 agrees and 0 disagrees Disagree   Agree
    • Just used it for a couple of minutes. But it really seems to do exactly what I need! Lets you choose the time, not like F.lux Guest • May 2016 • 3 agrees and 1 disagrees Disagree   Agree
    • So happy I can set my own times. In the winter the sunsets happened way to earlier in Flux, then I'd turn it off and forget to turn it back on. Guest • Jan 2017 • 2 agrees and 0 disagrees Disagree   Agree
    • Has keyboard shortcut to turn it off and the computer doesn't lag while the filter is turned on. Guest • Feb 2017 Disagree   Agree
    • Able to set times, value of filter... More options. Guest • Apr 2017 • 1 agrees and 1 disagrees Disagree   Agree
    • I can change the settings in this software to activate in 24 hours but I can't active red layer in Flux in 24 hours. Guest • Aug 2017 Disagree   Agree
    • A Hole Pletora of Configuration Options in comparison with F.lux, allowing setting for Daylight color, Transition Time of any user specified Duration, Full Disable of Program ( not just for a temporary specified time period ), HSB Color Schemes in addition to just Kelvin temperature profiles. Guest • Dec 2016 • 1 agrees and 1 disagrees Disagree   Agree
  • RedshiftGUI icon


    RedshiftGUI changes the color temperature of your monitor to better match that of your surrounding. This means that it sets a cooler color temperature during the daytime...

    Free Open Source Windows Linux

    No features added Add a feature
    • Discontinued The project seems to be no longer developed. Last version, 0.2.4, released in August 2014, can be still downloaded from GitHub.
  • LightBulb icon


    Background application that adjusts screen gamma, making the colors appear warmer at night, reducing strain on your eyes.

    Free Open Source Windows

    • Has minimal performance impact and can be configured to have no impact at all (at the cost of smoothness). Best choice if you are a gamer. Guest • Mar 2017 • 2 agrees and 1 disagrees Disagree   Agree
    • Superior performance. Detailed explanation by the author here: CaptaPraeliumMar 2017 Disagree   Agree
    • Simple, lightweight and configurable. Plus open-source. For Windows it does the job. johngrayboschApr 2017 • 1 agrees and 1 disagrees Disagree   Agree
    • Very user friendly, open source, not skeptical like f.lux Guest • Apr 2017 Disagree   Agree
    • + Free & open source + Adds the feature of setting your own sunset and sunrise times, which the f.lux developer(s) did not want to add + Access to the keyboard/mouse logging hook MSCTF.dll can be declined without affecting functionality except for the ability to configure quick-keys - Occasionally crashes when denied a permission by comodo HIPS, but nothing so regular that it gets in the way of use. Guest • May 2017 Disagree   Agree
    • Same features, Much Better performance (Key when playing Games or performing intensive tasks), with additional options for customization, like Hotkeys, and disabling it when using a full-screen application. Guest • Jun 2017 Disagree   Agree
  • Red Moon icon

    Red Moon

    Red Moon is a screen filter app for night time phone use. When the lowest brightness setting of your phone won't do the trick, Red Moon makes your screen even...

    Free Open Source Android

  • G.lux icon


    G.lux is an unofficial variation of F.lux. G.lux is an app that automatically changes the colour temperature of your browser as the sun goes down. Monitors are typically...

    Free Mac Windows Linux Chrome OS Chrome

    • It doesn't use the whole screen, only the current browser page. And the sunrise/set isn't "smart" like f.lux does with your location. Guest • Jun 2015 • 5 agrees and 1 disagrees Disagree   Agree
  • Iris mini icon

    Iris mini

    Iris mini is free cross-platform blue light reduction and PWM flicker free brightness software.

    Free Mac Windows Linux

    No features added Add a feature
    • Very minimalistic and lightweight. Doesn't affect games (i.e. microstuttering) the way f.lux does (if you set it to Paused mode). Guest • Jan 2017 • 0 agrees and 1 disagrees Disagree   Agree
  • Dimmer icon


    A very small and free utility for Windows to reduce brightness on LCD/TFT screens. A must if you work on your computer at night with very low ambient light.

    Free Windows

    • Discontinued The program is no longer updated. Latest version, 1.0, released in March 2007, can be still downloaded from the official website.
    • Dimmer controls monitor's brightness not color temperature. Guest • Jun 2015 Disagree   Agree
  • Screen Filter icon

    Screen Filter

    Applies a shade that acts as a dimmer to ensure your eyes don't hurt. Far more powerful than Android's built-in brightness setting. Great for low-light gaming...

    Free Android Android Tablet

    No features added Add a feature
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  • CF.lumen icon


    CF.lumen - don't let your phone blind you! CF.lumen changes the colors of your Android device's display based on the position of the sun. With the default...

    Freemium Android Chainfire3D

  • GoodNight icon


    GoodNight is an IOS app developped by @anthonya1999 (Github).It allows you to adjust the screen temperature, brightness, and color. GoodNight isn't downloadable...

    Free iPhone iPad

    • It's just like F.lux, but for iPhone without Jailbreak. leocaseiroFeb 2017 Disagree   Agree

f.lux Comments

Trouble with ASUS Splendid Technology

Comment by poderpelon
about f.lux · Jul 2017 · Helpful Not helpful

I have it on a Asus laptop with the ASUS Splendid Technology. When I't runs the screen blinks, and I'm only able to stop it if I run the Eye Care Switcher that is part of the Asus Splendid tools.

Comment by kscalvert
about f.lux · Jun 2017 · Helpful Not helpful

Makes viewing my computer screen very easy on my eyes in low-light settings.

Comment by carolinewest
about f.lux · Jun 2017 · Helpful Not helpful

It was the first screen 'dimmer' I heard about and it was very helpful when using the PC late at night. I like its settings. Ability to change intensity. Also, by providing your timezone, f.lux could automatically switch on and off. It's a good program. Being free is even better!

Comment by iwbb
about f.lux · Jun 2017 · Helpful Not helpful

it helps you look at the screen at night without your eyes turning into something you would only see in a horror movie.

Comment by MiauFrito
about f.lux · May 2017 · Helpful Not helpful

f.lux saved my life. I install it on every computer and have recommended it to almost everyone I know


Please open source it

Comment by TimPl
about f.lux · Jun 2016 · Helpful Not helpful

Why not?

It's going to be a sold product in the future, with patent and all.

Yeah I agree. I mean it works well enough right now, But the Windows version is completely different from the Mac.



Comment by Mustt
about f.lux · Dec 2014 · Helpful Not helpful

Une petite application très pratique que j'utilise depuis quelque temps déjà pour le sécurité des yeux. à essayer...

Comment by runical1991
about f.lux · Jun 2011 · Helpful Not helpful

I see. Might try this on my desktop then (when I use it). Thanks for the clarification.

Comment by runical1991
about f.lux · Jun 2011 · Helpful Not helpful

How is this different from an ambient light sensor in a laptop (which also consumes less resources) ?

Comment by NginUS
about f.lux · Jun 2011 · Helpful Not helpful

Overly-restrictive licensing:

"We hereby grant you a nonexclusive license to use one copy of the Software on any single computer, provided the Software is in use on only one computer at any time."

Comment by calavera
about f.lux · Jun 2011 · Helpful Not helpful

Well I must say that the app developer is awesome! I sent a twitter message to him regarding the problems with the new macbook pro and within two hours I received a reply with a link to a beta build that fixed the issue. He even sent me another build immediately after where he fixed another issue he found. So all is well again, however the version with the fix is not yet publicly available. If you happen to have this same problem, check out @herf's feed (the developer) on twitter and you will find the link to the beta build.

Comment by calavera
about f.lux · Jun 2011 · Helpful Not helpful

And.... now it won't work on the new Macbook pro :/ every time the display switches between the integrated and dedicated graphics card, the screen gets redder which basically is a complete no go.

Comment by calavera
about f.lux · Jun 2011 · Helpful Not helpful

This app is great... I've had problems with insomnia for as long as I can remember. Within 30 minutes of downloading and installing this app last night (@4 in the morning), I fell asleep with my laptop on the couch. There's definitely something to this "blue" spectrum thing.