"MyBrushes Pro is an incredibly popular app for iPhone/iPad painting, it's just been updated and now fully supports retina display, painting effects sharpness has been increased by 4 times.
This is a free update, if you already purchased this app, if not you can pick it up."
For anyone out there that paints on their iPhone or iPad, MyBrushed Pro just updated, with sharper effects...and the retail value is worthy of your time.