Hey StevenP, the thing about apple is they are very strict when it comes to APPs. Its not about the AppGameKit in this case, the competition is tough when it comes to apple accepting apps for the iPhone or any of their devices. I knew a few people that made apps for the iPhone only to be turned for their months of hard work. There is no guarantees when it comes to them.
The one thing they constantly throw in your face is the "virus" issue. In fact this was brought up again just recently when they sued Amazon for the Amazon / Germany Appstore. Amazon no longer accepting apps from germany according to the August 1st info of this year.
http://www.lovefortech.com/2011/08/01/apple-lawsuit-causes-amazon-to-stop-accepting-apps-in-germany/
And if you google anything on this subject when it comes to Apple, you'll see tons of law-suits that apple has had over the past years.
My advice, don't count on making a career on making apps for anything related to apple. I'm not saying don't do it, I'm saying don't expect anything from them because there is so much competition and they turn down people by the thousands every day.
The only reason I brought up the info about the law-suits is because it goes to show their way of thinking.
"If you can sing that high, you must have been kicked in the crotch a little too hard."