First of all, web apps are free, and in HTML5, the standard that Steve Jobs advertised with the iPad, and do not go in iTunes. All apps must be written in C, Objective-C, or C++. Converted apps are no longer permitted. In Xcode, though, you must right apps in Objective-C. It is very difficult, and not practical not to, in Xcode. Or, look for external, 3rd-party app creators.

I hope this reply came fast enough, it's only 2 years late. Good luck on your app!