A free program for Android, by AndroThinkers.

Sketch Book: Color and Pencil S is a free sketching app with an easy-to-use interface and beautiful themes. It’s the perfect tool for artists who want to practice drawing and for kids who want to explore the world of art. With the help of this app, you can make beautiful drawings using your phone or tablet.

You can also use it as an image editor. It has a wide range of filters and effects that can be applied to your photos, such as color, contrast, brightness, saturation, and more. It also has a variety of drawing tools, such as pencils, marker, and even paint.