I tried out f.lux a while ago. The problem is, a 'warm' screen really doesn't look very nice, and after a few late nite coding sessions I disabled it. I've found it much more effective to just turn the brightness down at night.
For the iPhone and iPad, it seems like when you turn the brightness down past a certain point it stops being an attention grabbing shiny object, and just turns into another, boring thing. Weird I know, but try it.
If you jailbreak (don't do it without researching it), there's an app called SBSettings that adds a bunch of quick toggles, including brightness, in a snappy drop down menu accessible from inside any app.
Yup, very handy. I have this installed. I still wish there was some custom fine-grained controls that the user can set for their own preferences (based on brightness of their surroundings). I would definitely pay for some app that does this.
Bonus tip for users on Mac OS X: try pressing ctrl+option+command+8. I find that really handy if I'm using my laptop when it's dark and I hit a webpage that's blindingly white.
Oh man I forgot about this! Baddest-Assed. Feature. Ever. I just did it on my girlfriend's machine while she was out of the room. Don't worry, I'll probably revert it for her soon enough.
So I tried flux for about three weeks and it didn't really seem to affect me. Reading/working by candle at night actually helped me more, though still not a lot.
I use it while I read in the morning. The idea is to go for lots of blue exposure in the mornings rather than amber at night as a way to shift my circadian rhythm. I may report on its efficacy once I've had enough time with it (if I ever get around to building a new site). My sleep patterns aren't as bad as a lot of people who use a screen excessively, but I'm working toward shifting my wake up time to very early.
Very cool - giving it a try. I just wish it worked on the street lamp outside my window.
From what I understand, color temperature can have a huge effect on your health. When I worked at an architecture firm, I attended several lectures by our lighting designer, who explained that some studies linked being exposed to the wrong color temperatures at the wrong times (like if your city's street lamps are daylight) to a variety of health problems, including cancer. Sorry, couldn't find a reference for this; but here is a study related to color temperature's effects on the circadian system: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1779263/
I've been using f.lux for months. Not sure if its affected my sleep cycle but it does reduce glare to eyes. I already keep the brightness at the dimmest (osx), so i can't reduce it further at night.
why is everyone putting a dot after the f ?
It looks like they are following the author's lead. I imagine they are trying to highlight the wordplay in the application's name. Where the light (lux) levels that your monitor gives off changes over time or is "in flux". It also makes SEO easier for a common word like flux.
For the iPhone and iPad, it seems like when you turn the brightness down past a certain point it stops being an attention grabbing shiny object, and just turns into another, boring thing. Weird I know, but try it.