Thanks for the info! One question: would it be possible to release a web app as a "normal" app, too? Like submit the "app Safari" version to the app store or something like that?
I suppose you could wrap everything in a WebKitView (or whatever it is called) and just submit that to the AppStore, but as some have pointed out before, you will probably get a "Mature" rating because all data is loaded from the web...