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...

    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 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

    • 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 Disagree   Agree
    • Can set also brightness level to change automatically. Can set the time to change to night time yourself. bklampflOct 2016 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 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 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 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...

    Open Source Windows Linux

    No features added Add a feature
  • Twilight icon


    The app filters the blue spectrum on your phone or tablet after sunset and protects your eyes with a red filter. The filter intensity is smoothly adjusted to the sun...

    Freemium Android

  • LightBulb icon


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

    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 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 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 • 9 days ago 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...

    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 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 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
  • 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

    No features added Add a feature
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  • iBrightness Tray icon

    iBrightness Tray

    iBrightness Tray is a little bit of a swiss army knife display tool as adjusting the brightness of your screen is just one of three main functions it has. The other two...

    Free Windows

    No features added Add a feature
    • Discontinued The program is no longer updated. Last version, 1.0, released in 2013, can be still downloaded from the official website.
    • It just changes brightness. F.lux changes colours according to time of day. Guest • Nov 2015 Disagree   Agree

f.lux Comments

Resets Windows Calibration

Negative Comment by John_Proctor
about f.lux Apr 2017

This app completely resets Windows calibration settings and the developers aren't willing to fix it even though the issue has been oepnly addressed on their forum multiple times. This makes it completely unusable for me since all my black colors turn to grey and if you're using Windows calibration, you won't be able to use it neither.


Please open source it

Comment by TimPl
about f.lux Jun 2016

Why not?


I can't express how much I enjoy f.lux! This is all I am gonna say!

Positive Comment by sukera
about f.lux Mar 2016

I can't express how much I enjoy f.lux! This is all I am gonna say!



Comment by Mustt
about f.lux Dec 2014

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


I don't get it

Negative Comment by Azazel
about f.lux May 2014

This application makes my eyes sore and my vision gets blurry when the app comes into play in the evenings. I really don't understand the reason behind so pervasive praising of this program. Dammit, why not just manually adjust the brightness of the monitor at night or, even better, aim to use your computer only during daylight hours? Why would someone rely on some piece of software that's basically aimed to decide what's best for eyes without even knowing the model of the monitor or anything about its settings?
And that expression from the description cracks me up: "During the day, computer screens look good—they're designed to look like the sun." Designed to look like the Sun you say? No sh*t. Last time I tried gazing at the unclouded Sun for more than a couple of seconds I felt like my eyes are going to die on me. I am sure as hell I haven't ever experienced anything similar with any of my bloody computer screens.


best addon ever!

Positive Comment by nglopenshaw
about f.lux Aug 2012

This has single handedly increased my hours in front of the computer screen, for the better that is. Thank you so much, you have made a great tool!



Positive Comment by nironan12
about f.lux Oct 2011

I can't live without this app! I've had it for a long time now and it's definitely helped my eyes.


I see. Might try this on my desktop then (when I use it). T ...

Comment by runical1991
about f.lux Jun 2011

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


How is this different from an ambient light sensor in a lap ...

Comment by runical1991
about f.lux Jun 2011

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


Overly-restrictive licensing:"We hereby grant you a nonexcl ...

Comment by NginUS
about f.lux Jun 2011

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."


Well I must say that the app developer is awesome! I sent ...

Comment by calavera
about f.lux Jun 2011

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.


And.... now it won't work on the new Macbook pro :/ every ...

Comment by calavera
about f.lux Jun 2011

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.


This app is great... I've had problems with insomnia for as ...

Comment by calavera
about f.lux Jun 2011

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.