Hi!
I don't think you would find an adequate answer to your question on a community forum that focuses on Android devices. I would recommend contacting development teams on iOS forums or contacting the development studios that develop iOS games for such information, as anyone can post anything on an internet forum. So any information you get here would be suspect.
I'm also going to move it to the Computers/IT forum, as it doesn't quite fit into the Android Games forum. Maybe someone can help you there. But I really think you should look for iOS specific information.