Really helps me sleep better at night, I get sleepy faster when reading or playing casual games in bed with the low color temperature filter. Also less annoying if you have to check your phone in a dim meeting\conference room.
It works well unrooted, but of course the root driver will always be superior. I wish there was a way to darken the software keys in non-root mode. Otherwise this is a great app whether rooted or unrooted (I'd recommend using the app when rooted though).
Good app. 1 issue: if you make the nav and the status bars auto hide, then it won't draw over the whole screen, there is a gap at the top where the app doesn't reach over. Please fix for 5 stars and buy :) Thank you!
Most recent updates have utterly broken this app (using CF or KCAL driver). Every time superuser access is granted, CFL stops, when accessibility services settings are modified, the root driver stops working, getting random flashes of the filter turning off etc. N5X 6.0.1.
Took a little while to get used to, but in the end it is surprisingly useful. Easy on the eyes when reading in the dark. It's an app I reinstall every time I flash. 10/10, it's a must have!
I was not surprised by the incredible performance of the app nor by the ease of use. After all the author is the one and ONLY - ChainFire. This software is in a class of its own. Thanks for all your efforts and gifts.
CF.lumen driver now also works in Performance mode on various Nougat devices, and the grayscale filter has been upgraded from a toggle to saturation slider.
Free blue light filter for eye care! Best blue Screen filter app for night mode!