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With a web interface and mobile app, a user who buys a subscription through Stripe is automatically created an account that allows them to log in to both the web interface and mobile app. When going through the review, we received a rejection from Apple review team with the requirement to implement in app purchase. I have an already published app with the same functionality where the review team did not require IAP implementation. Does the web interface have to contain 100% of the same features as the mobile app in order for the mobile app to be recognized as a "Read" version and no IAP integration is required? When asked if Stripe can remain available for purchase through the web interface in conjunction with IAP in the mobile app, I received the response "In regards to using Stripe alongside in-app purchases, please note that providing access to mechanisms other than in-app purchases for purchases or subscriptions to be used in the app does not comply with the App Store Review Guidelines." On what basis the subscription purchase in the web interface does not take place, if there are no requirements for mandatory installation of the mobile application and the user can use the web version without installing the mobile application.