A little glitchy. Black needs to be sharper The feature I've seen on the new iPhone OS is better than the cover-all filter on this app. You loose a lot of black with this app which makes it harder to read text. However, I have noticed less disruption during sleep at night and it is easier to fall asleep. Functionally, it works as advertised. Less eye strain and better nights sleep. The app itself is easy to use. You can set it for day and night to automatically turn on. It occasionally blips off and on when switching apps.
Good simple app but quite glitchy I love that it doesn't require unnecessary permissions. I would give five stars if it weren't so unstable. The filter randomly shuts off quite often, even though it's still turned on. Please fix stability for five stars.
NEEDS IMPROVEMENT They failed to make this app when in fact it should have been easy. It's simplified to the point that it would only fit a small market of the vast users of android devices. You can only adjust the auto adjust times to 7pm - 7am. And vice versa. What if we want to adjust the hours to which we want it to shift?... your SOL. Simply put. Works. But with something so simple they still managed to mess it up.
Is this a beta? Seems to work at random and doesn't automatically switch at the hard coded day/night times. It's does seem to block blue light tho (or at least makes the screen colours warmer)
Doesn't work I'm uninstalling because the filter doesn't automatically switch itself on and off at the stated times. As other reviewers have said the black is a bit pale but to me it's acceptable if the filter worked automatically. Pity because it's a nice simple app.
My problems fixed My doctor told me my eyes absorb more blue light and are making me extremely light sensitive. On to of that I have had massive eye strain causing me terrible headaches. So I got some Rose tinted glasses and this app and I haven't had a migrane since. Love this app. So worth it.
Fixed issue with Android Marshmallow