org.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.