Now, let me anticipate two questions which go hand in hand: Why does the app require an iPad 2, and why is the maximum image size 1600x1600px? The iPad 2 has twice the RAM, twice the processing cores, and ~5x the graphics grunt of the iPad 1. PS Touch brings some seriously powerful algorithms (e.g. Refine Edge) from the desktop to mobile, and we wanted to ensure a good match between hardware & image size. The app is geared more towards remixing photos & sharing them onscreen than towards print work; having said that, note that a 1600×1600 doc could be printed at 10.6×10.6″ at 150dpi.
