Dimmer (org.brightify.dimmer) on Google Play
Never let your phone blind you in the night again.Dimmer is a simple tool that puts a black filter on top of all apps so that the amount of light emitted by your display is even lower than it would be with only lowest brightness settings. Dimmer also includes "Timed mode" that allows you to set the times when you want the filter to be applied and removed so that you do not need to start Dimmer manually every night. If the filtering level seems too high or too low, you can simply adjust it in your notifications where you can also disable it completely.