Chief among this is the requirement that all in-app purchases have a 30% tax by apple. Which is why you can't buy books in the kindle ios app[0] among others.

Chief among this is the requirement that all in-app purchases have a 30% tax by apple. Which is why you can't buy books in the kindle ios app[0] among others. [0]https://www.techspot.com/article/1597-how-to-buy-kindle-book-iphone-ipad/ https://www.techspot.com/article/1597-how-to-buy-kindle-book...