Pick n Paint is a simple and fun app for making colourful drawings that can be easily shared on social networks like Facebook and Twitter. It provides a full palette for colour mixing plus undo/redo to let you experiment and fix mistakes.
More advanced users will like the pen history feature and the ability to save favourite pens in the pen holder for quick and easy access.
Note that to share drawings on social networks, the relevant app(s) must be installed - Facebook for example - and signed in.
Sample drawings by Katherine Hudson.