Sand Pictures is an interesting app -- it might not appeal to everyone, but I think there's an audience for it on the iPad nevertheless. It's from David Frampton, overseer of Majic Jungle Software, and creator of the popular Chopper series for iOS. But this is a much less violent affair than that series: it's basically a simulation app for those falling sand picture frames you sometimes see at gift stores.
Despite its simplicity, there's a surprising amount of options to play with, from changing the background picture with just a two-finger swipe to changing the color of the sand, and flipping around the iPad to send the s