The Story Behind F.lux

I am one of the people who love the idea of f.lux. I use it and it makes my eyes feel a lot better and makes me feel sleepy at the right times.<p>But the app itself is terribly broken, at least on El Capitan. Whenever I switch modes, the screen flashes the original blue colors---my impression is that even a few seconds of blue light can mess up melatonin production, so this is unacceptable, especially from an app that is pushing the idea of color temperature mattering. Also, &quot;movie mode&quot; results in pulses of blue light every few seconds. Sometimes I select &quot;disable for an hour&quot; and nothing is disabled. &quot;Disable for current app&quot; is also spotty.<p>For this concept to work, and if the ideas about the effects of color temperature are true, then the implementation has to be completely solid. So I&#x27;m glad that Apple is duplicating the functionality of f.lux rather than supporting f.lux itself on iOS. I&#x27;ve also been looking into alternatives on OSX.<p>It&#x27;s time that we move on to an implementation that actually works.

I use redshift[0] on my linux machines which I really like. Cyanogenmod has LiveDisplay natively which is practically the same thing unfortunately it works off off gps location and not manually editable lang&#x2F;long. Both are really helpful.<p>[0] <a href="http:&#x2F;&#x2F;jonls.dk&#x2F;redshift&#x2F;" rel="nofollow">http:&#x2F;&#x2F;jonls.dk&#x2F;redshift&#x2F;</a>

Is anyone else puzzled by the idea of f.lux consuming 14 developer years (at least according to the article), it&#x27;s an awesome app but that seems like a huge number for what it is: a gui interface to a very simple function*.<p>[0] <a href="http:&#x2F;&#x2F;www.tedunangst.com&#x2F;flak&#x2F;post&#x2F;sct-set-color-temperature" rel="nofollow">http:&#x2F;&#x2F;www.tedunangst.com&#x2F;flak&#x2F;post&#x2F;sct-set-color-temperatur...</a>

There&#x27;s 29 comments here and every single one is neutral or positive about Flux as an idea.<p>Am I the only one who used it, and hated the fact that my colours were obviously all wrong?<p>Each time I used my computer at night, I noticed that everything was tinted red, and it had no obvious effect on my sleep.

I am puzzled by so much fuss about one simple and small app (I am not questioning its usefulness, I am using it too). Every once in awhile (and frequently lately) it pops up on hacker news front page or somewhere on the web.

Since I installed F.lux on my work computer I&#x27;ve experienced a significant decrease in eye fatigue and a general increase in productivity while working at night.<p>Would recommend for anyone who works in low-light conditions.

I use it, and I like it, and I think it works. But I also think they should <i>really</i> try to publish a paper on it, proving it works to improve e.g. people&#x27;s sleep quality.

I&#x27;ve used it for a long time and it makes the difference between feeling sleepy in front of a computer and falling asleep in front of a computer. Highly recommend it.

Now it would be great if android included it in the system soon. I used an app for it, but as soon as 6 came out, I dropped all unnecessary privileges from installed apps.<p>Unfortunately you can&#x27;t have any app drawing directly on the screen if you want to change privileges. That means I had to choose between silly-bright screen or more secure system... and that&#x27;s a terrible tradeoff to present to users.

I&#x27;ve been using it for a few years. It works.<p>Sometimes, if using a laptop in bed, I wish it would be possible to make the LED backlight dimmer than the minimum setting, or apply a black semi transparent overlay to dim things, from within f.lux. At the moment I have to use another 3rd party app for that

Fyi Display Link devices (which are used to dock a laptop to two monitors via a single usb cable) do not support color calibration, so flux does not work.<p>Found out after purchasing a usb docking station. Still fairly happy with the purchase though. Display Link is actively releasing new drivers so there is hope.

I was working a REALLY long shift at work about a year ago (datacenter move). Came back to my desk from the DC at about 3am and for a few minutes, thought my system or monitor was broken because everything was dark dark shades of orange.<p>Then I finally realized I&#x27;d never been up at that time with f.lux running... D&#x27;oh.