Krita

Krita is a professional painting program.

It is made by artists that want to see affordable

art tools for everyone.

It's designed primarily for digital painting and

2D animation and features an OpenGL-accelerated canvas,

colour management support, an advanced brush engine,

non-destructive layers and masks, group-based layer

management, vector artwork support and switchable

customisation profiles.

Note: android version of krita is optimized only

for tablets and may behave poorly on phone screens.