An iOS Player will NEVER be available in an Apple store.
And this is because Apple will not allow it because it theoretically allows someone to buy one app and play multiple ones (via broadcast) without Apple getting their cut.
TGC does have an Apple Player service (and I'd have to look for the link) where they will build you a Player for your device(s) for $25. But, you must have an existing Apple iOS Developer's License (which costs $99/year).
If you have a Mac device, then you can build your own Player. But you will still need the iOS Developer's License. Which you would need if you ever plan to publish with them.
Cheers,
Ancient Lady
AGK Community Tester and AppGameKit Master