If you want to take doodling to a more peaceful and artistic plane, try Zen Brush 2, an app that mimics the feel of painting on parchment using a traditional ink brush.
True to its name, Zen Brush 2 keeps the drawing process simple and soothing. Although you can choose from many different backgrounds—plain Japanese rice papers, subtle tie-dye designs, and seasonal patterns are just a few—there are only two ink colors per canvas.
Your brush options are also helpfully limited to either wet (which makes the ink bleed as you draw), dry (which has a coarser effect), or something in between.
You don’t have to be a skillful artist to enjoy watching your brushstrokes appear. Zen Brush 2 imbues whatever you paint—whether the Japanese character for stillness or a simple straight line—with the look of fine calligraphy. Virtual doodling has never been more serene.