Gamma Thingy – F.lux Style Screen Temperature Controller for IOS, No Jailbreak Required
iOS: F.lux is a great little app that changes screen brightness based on the time of day . This is an iOS jailbreak app for iOS , but if you don’t want to jailbreak you can get a similar Gamma Thingy app by building and compiling it yourself.
Gamma Thingy is not in the App Store, but it is on GitHub and you can subsequently download it to your iOS device with a free developer account if you have a little time (it’s not particularly difficult, but it takes a little time., Here’s how ). Once you have done that, you can easily adjust the color of your screen so that it doesn’t dazzle. It’s not as hard as F.lux, but it gets the job done.
Gamma Thingy | GitHub via iDownloadBlog