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f.lux makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.

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 9 p.m., 10 p.m., or 3 a.m., you probably shouldn't be looking at the sun.

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 more...

What's New

Version 30.1:

Note: Please don't upgrade if you are running OS X 10.5 or earlier.

  • daytime slider goes down to 2700K now, instead of 3400K before
  • notifiers go away after 30 seconds
  • rounding fixes
  • UI fixes

Requirements

OS X 10.6 or later

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f.lux User Discussion

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Dana Nau Member IconReview+8
Dana Nau
+0

For me, this app is a must-have. The default 6500 K color temperature of most computer displays gives me eye strain, and f.lux provides the easiest way for me to reduce the color temperature to something that's kinder to the eye.

Reply0 replies
Version 13.0
DavyB Member IconComment+8
DavyB
+0

MacUpdate claims the current version is 30.0 but the zip file downloaded from BOTH Macupdate and Stereopsis is 30.0 of 2014-03-17

Reply0 replies
Version 30.1
Frankof Member IconReview+228
Frankof
+0

The new version gives me problems every evening. I have the setting to "work late" - because that's what I do - and it kicks in properly. However, regularly at midnight it abruptly changes back to daytime colors, then goes down again, then up once more for a short peak. It really drives me crazy and "wakes me up".
The last version did not have this problem - at least not for me.

Reply0 replies
Version 30.0
B. Jefferson Le Blanc Member IconReview+649
B. Jefferson Le Blanc
+2

The latest version of f.lux has some nice enhancements. In particular I like the ability to disable it on a per application basis so that, if I'm working in Photoshop, for instance, it will not kick in and distort the color space.

The ability to customize the color used at night time is probably it's strongest feature. This enables me to set it to suit my preference rather than use the default settings. The new version takes a little time to tweak, given the new variables, sunset and bedtime, but it's well worth the effort.

Reply0 replies
Version 30.0
Balanchine Member IconReview+108
Balanchine
+1

I love this app when working at night. So much easier on the eyes than my iMac's default settings.

My main problem with f.lux has always been remembering to keep it switched off when watching a movie or using graphics software. This update addresses that problem, allowing you to disable f.lux for the rest of the night rather than one hour, and also for individual apps: just select Disable from the f.lux menu and the current app will be excluded. I'd prefer to have an editable list of exluded apps in the preferences, but this is a workable solution.

Reply0 replies
Version 30.0
Whisperquiet Member IconReview+52
Whisperquiet
+1

A great little application that's a 'must have' for those of us who sometimes work late.

Reply0 replies
Version 30.0
Jazzyguy Member IconReview+3699
Jazzyguy
+2

Very Nice program. I like it

Reply0 replies
Version 30.0
Joy-Livingwell Member IconReview+20
Joy-Livingwell
+0

Nifty little app that automatically color-shifts your computer screen for nighttime use. It's easy to turn f.lux on and off without quitting the program. It's both stable and polite. Since f.lux doesn't DIM the screen, I use it combination with the screen dimmer Shady. When dimming is off, your screen looks normal.

Features I hope the developer will add: a setting for white LED bulbs; ability to change the color temperature to red to preserve your night vision; and an integrated dimmer (so I can use one program instead of two).

Reply0 replies
Version 23.0
Joy-Livingwell Member IconReview+20
Joy-Livingwell
+0

Excellent little app, and I tested a bunch of them before picking this as the best. Stable, easy to use, can dim your screen WAY down, and doesn't affect the screen brighteness or color at the brightest setting. Plus you can just switch it off to watch a movie, and keep your settings. I use it in combination with f.lux, which color-shifts the screen but doesn't dim it.

Reply1 reply
Version 23.0
Joy-Livingwell
+2

Oops, I thought I was on the Shady page; this was my review for Shady. I have contacted support and am trying to get this removed. (And why isn't there an easy and obvious way to do that, at least within the first 5 minutes of posting? Hello, MacUpdate!)

Mountabe Member IconReview+41
Mountabe
+0

I will never go back. Worth jailbreaking iPhone just for access to F.lux as well.

Reply0 replies
Version 23.0
user icon+0
Aalchemy
Version 30.1
user icon+2
Ededed
Version 30.1
user icon+11
LuukLuuk
Version 30.0
user icon+9
Pixada
Version 30.0
user icon+0
-TiTAN-
Version 30.0
user icon+4
Xanteen
Version 30.0
user icon+35
PRjohnson
Version 30.0
user icon+0
AlbertTCB
Version 23.0
user icon+9
Widber
Version 23.0
user icon-3
Doctorfo
Version 23.0
> 5 68

Ratings

Overall
(68)
Current Version (30.x)
(12)

Details

Downloads 29,155
Version Downloads 5,196
Type Utilities / System
License Free
Date 09 Apr 2014
Platform Intel 64 / OS X / Intel 32
Price Free
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