Great potential, but very frustrating "PRO" – PRO Finger Sketch Paint BA.net for iPhone Review

GOOD: sketch tools are interesting and somewhat inspirational, so with careful design and placement, you can create something interesting BAD: user control of tool dynamics non-existent; Undo erases everything up to last Saved version, not just the last stroke so you end up undoing a lot of good if you make 1 bad stroke; Zoom kicks in on an iPhone 4 every time you change tools, and worse, both the double-tap and two-finger-expand to "zoom out" feature work VERY erratically, unreliably, and can totally destroy an image by placing random brush strokes when attempting to zoom out.
Review by Brucello on PRO Finger Sketch Paint BA.net for iPhone.