Here's an honest bit of distasteful information (for some) - I smoke Meth, so I can and have spent up to 48 hours straight looking at a pc screen at full brightness/gaming etc.
f.lux literally is gives me less thing to worry about - my eyes stay un-strained and relatively relaxed. Without it I get a consistent pain/irritation that slowly builds and builds.
Sad story, but whatever, thanks f.lux - just thought you should know you're helping out.
Excellent software. Highly recommended for those working late at night, trying to limit the 'blue light' that can affect the quality of your sleep. The reason for leaving 1 Star off, is because I work in Graphic Design where color accuracy is key. It is simple enough to temporarily turn off f.lux with one click for one hour, but I would truly love to see something implemented that can be triggered by launching Photoshop, for example, that f.lux would automatically revert to default coloring/lighting. I've forgotten to turn if on/off too many times and I've been disappointed that I didn't catch it at the time.
That is strangely, one of the great things about f.lux - that after the initial oddity of everything being shifted in colors at different times of the day... after a while, your body simply gets used to it and you really don't even notice it working in the background. I has been a lifesaver for my eyes while doing late-night projects, and found myself naturally getting tired earlier than I would've before - subtle, but very effective!
I look forward to more improvements and additions to the software in the future. I hope they don't forget about Windows users, as it seems (and I may be wrong) that much of the attention is focused on the Mac community in terms of improvements and updates.
Ch Muhammad Wasiq
It's good for regular users
I work on the computer, and this program has saved my eyesight.
I think Eye Pro is better. It's easier to adjust the screen brightness.
It's really a good utility. Using it every day and night.
Big thanks to the developers, every day taking care of my eyes!
You can notice the difference right away.
It is a great piece of software to avoid eye strain when you spend a lot of time in front of a computer. It slowly adjusts your display to match with outside ambient light. then again, it's not really useful when in enclosed space without windows and constant light or when doing color sensitive work (eg. Photoshop, web design etc)