We want to have subscription that exist within user account. With Apple IAP if you buy a subscription once, it cannot be bought again for the same iCloud account. But if our user within our app logged out and created another account (app account not iCloud account) he should have ability to buy subscription for this new account.
Does Apple allow to use third-party service to implement subscriptions now (e.g. Stripe)? Because Apple IAP renewable subscription model wont work for our case.