Sketch Drawing Board lets your iPhone or iPad into a drawing board. You can draw anything you can imagine. The program offers 10 different kinds of pens, including ball pen, pencil, brush, brush, watering can, etc., you can draw a variety of different shapes of lines. With these pens, you can complete a variety of images, just like using a real pen drawing on the real drawing board. And you'll find it more convenient of using iphone or ipad than paper, you can draw pics at all times and places
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ZHU YI