Just a simple black screen app.

FEATURES
1. Makes screen perfect black ( #000000 ).
2. Hides notification panel.
3. Hides navigation buttons.
4. Prevents screen from sleeping.
That's all.

SOME USEFUL SITUATIONS

1. Use when you don't want to turn off the screen.
2. Quickly make the phone appear locked. Without having to press the lock button.
3.Add the command "open app black screen" to your Google Assistant Bedtime Routine to avoid having to turn your screen off.
4. Use this app icons (x4) for masking pixel icon folder in the home screen.
5. Hide any portion of the screen if your phone supports popup view.


And much more....