BroDim screen dimmer

Using a phone or tablet in dark environments can put real strain on your eyes and cause eye fatigue.
By downloading and enabling BroDim Screen Dimmer, you can make the display go darker than usual.
This is very useful when reading e-books or just browsing the web.
BroDim Screen Dimmer have two features for controlling the brightness of the display. You can adjust the back-light of the screen with the brightness slider and can you can further adjust the dark overlay by using the dimmer slider. This will put a dark overlay on top of everything shown on the screen and effectually block out light.

BONUS: In case you are using a phone which have a AMOLED display, you will actually save battery power by using this filter since AMOLED emits its own light, and when we make the screen more dim, we save energy.