Krita

Krita is an excellent app for professional illustrations on Android, offering numerous tools, templates, and open-source access for creating both pixel and vector art.

Krita

Krita is a free digital paint program supporting photo retouching and vector editing, available on Windows, featuring numerous brushes, layers, and form support.

Krita

Krita is an open source digital drawing application, originally for Linux, now available on Mac, with features similar to literature tools and support for various image formats.