Instead of adjusting the brightness, F.lux works discreetly in the background, automatically adjusting the colour temperature of your screen. There’s a misconception that F.lux is like a software version of the ambient light sensors found on most Apple products and a lot of laptops these days.īut there’s a subtle and important distinction.

Whilst this gives you a very broad idea, many people miss the point completely. The strapline for the software is “ Better lighting…for your computer“. Like all religious cults, F.lux is an experiential process, you have to live it to truly understand… So what does F.lux do?

But it’s not easy to describe in words why there are so many devotees like me. It’s freeware so you won’t have seen any advertising or marketing campaigns.ĭespite being well under the radar, F.lux has a large, loyal and enthusiastic userbase, as demonstrated by the thousands of comments on the download page. You’d be forgiven if you’ve never heard of F.lux. A simple piece of computer software that I would now find hard to live without. How many technological innovations in the last 15 years have become indispensable in your daily lives? I can think of quite a few- the mobile phone, WiFi, GPS navigation, THE INTERNET, I could go on….