Wow! Color me very impressed. Not only is the app itself fluid, functional, and well-designed, but I'm sure it's the first of many you'll be releasing on iOS.
If you don't mind my asking: what resources did you use to learn iOS development? How long did creating this app take you?
Furthermore, what did you use for the main webpage? It's very well-designed--I probably wouldn't have clicked-through, otherwise.
I haven't had a chance to use the app yet, but I'll let you know when I do :)