Based on this posting from Apple: Offering Subscriptions to Multiple Apps, it should be possible to offer a single subscription to unlock multiple apps. So far, so good. But how do I need to set this up? Based on client request I want to setup the following structure:
1. Auto-Renewable Subscription to cover all apps from this client
2. Auto-Renewable Subscription to cover a portion of app from this client (optional, would be nice but the client would be happy with option 1 + 3 already if this is forbidden by Apple)
3. Option to unlock each app on it's own with a single purchase (non-consumeable)
But every time when I submit the app to the app store it is declined and I get a message pointing to this: App Store Review Guidelines - 3.1.2 Subscriptions
But why is this when this is a normal option offered from Apple? Based on the only response I got from Apple I think there should be not a subscription when it is purchaseable as non-consumeable but that is only partial true because the non-consumeable unlocks only the current app while the subscription unlocks multiple apps. So what am I missing?
All apps are designed that the user gets a warning when he tries to make a subscription if any app is already unlocked through a non-consumeable (because it would reduce the value of the subscription) and as soon as a subscription is active it is no longer possible to purchase any non-consumeable or subscription (except switching to another subscription tier if option 1 + 2 is possible in combination).