Tthe new app offers a number of improvements, including a completely revamped UI designed to quickly run through large collections. The new UI also keeps tools handy, but out of the way, as you use them. As you can see in the screen shots above, all the tools are stashed at the bottom of the screen instead of covering up your picture while you're working on it. Sketches 2 now lets you paint using brushes, which makes for some nice choices in terms of marking pictures, canvas, maps, or whatever else you choose as a background in the app. The zoom functionality has been updated, with new gestures and a smoother shape adjustment interface. As with the original Sketches app, you can share and export your work however you like. You can use the app to create a masterpiece and then tweet about it, or just mark some notes on a map and send it off to a friend.
Sketches 1 was a bargain back when I picked it up for $7 in the earliest days of the App Store, and this new version adds even more features at less than half the price. If you have any inkling about making some art on your iPhone, it's a solid buy.