Nearly perfect but...
On iPhone/iPod, specially on the higher difficulty settings, the pieces tend to pile up and theres no room where to move them.
If at least there was a "frame" of empty space surrounding the active area where you could temporarily move some pieces, it would be nice.
P.S. When you pinch to zoom, you can NOT move the screen, just the pieces.
Why not giving the opportunity for scrolling the board as well? Thats silly!
*pots* about
Jigsaw Puzzle App - jig puzzel, v2.3