Does F.lux actually work?
F.lux preportedly adjusts the color temperature of the display, which should make it easier to fall asleep. I stumbled upon it when searching for a program for adaptive nightmode on my laptop (I wanted a program to automatically change the brightness based on time of day).
While it does seem a bit easier on the eyes, the orange hue at night mildly annoys me. I understand that orange is needed to cancel out the blue, but I'm wondering if this is honestly any better than simply turning down my display's brightness.
I also heard about something called Gunnar which is apparently a similar concept, except it's glasses with orange lenses. However, I checked the cost and they seem a bit pricy.
Tl; dr: How does F.lux compare to simply adjusting the display brightness or to Gunnar glasses? Does it legitimately help with sleep, or is it just the placebo effect?
herf last edited by
We have some data posted here, so I think you'll find that gunnar removes about 1/4 the melanopic light, similar to running f.lux at 5000K:
https://fluxometer.com/rainbow/#!id=iPad Pro/6500K-iPad Pro&filter=filter/GUNNAR PPK
https://fluxometer.com/rainbow/#!id=iPad Pro/5000K-iPad Pro
We recommend much stronger settings that remove 90% of the light at night.