A simple pixel dither tool
How to use:
Play the auto-action that will create a folder, you paint inside the folder.
You can use any brush.
If you don't know how auto-action works, please watch this tutorial by CLIP STUDIO:
https://youtu.be/Z5RDxPlAIek
Airbrush

Brush

Linear Gradient

Circle Gradient

Inverted Circle Gradient

Auto-action
Gradient
Brushes