I read the article, but I'm still stuck on why Apple is asking for IAP to be included. Is the argument: "Hey, your app works with subscription services. You need to give Apple users the option to purchase via the App Store."
If so, why doesn't Fastmail (from what I can tell) offer IAP? Isn't this the same idea?
If so, why doesn't Fastmail (from what I can tell) offer IAP? Isn't this the same idea?