Bright light still appears and iPhone now has Night Shift function – Koala Browser - Sleep Better Review

Koala had a good idea but as many have stated it really only worked for web browsing. Even then, ads would pop up brighter, as would the keyboard. It's not very helpful to have a dim/red light for the browser but the keyboard you need to browse still be a bright/blue hue. After installing this app and not being very satisfied, I started looking at my iPhone settings and options and came across Night Shift under display and brightness. I'm not sure if it's new with my recent update or I just didn't see it before, but it's great. You can program Night Shift for the hours you want, or just turn it on manually, and it's system-wide: keyboard, apps, browser, etc.
Review by mlebdv on Koala Browser - Sleep Better.