Autodesk ships SketchBook 4.0 for iOS and Android

Updated 16 May 2017: SketchBook 4.0 for iOS is now shipping for iOS 9.0+. The base app (10 brushes, 3 layers, 16 blending modes) is free, but to unlock the other features requires an in-app payment of $4.99. A rental-only subscription to the complete …
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