A free program for Android, by Sinomeo.

Screen Filter Night Mode is a very handy app for people who have to work on a phone at night. If you have to surf the web or watch videos, you will have to turn off the brightness of the screen.

So, in order to avoid the discomfort of working on a bright screen, you can use this app to decrease the brightness.

Moreover, this application comes with a built-in dimmer to reduce brightness. It is very easy to use and it can be paused and resumed at any time from the notification bar.

It also includes a built-in blue light filter. It protects the eyes from pain and prevents headaches.