To be clear, even our iOS app doesn't currently have a mechanism to sign up for the service; we reserve that for the website. On there, we support Apple Pay as

To be clear, even our iOS app doesn't currently have a mechanism to sign up for the service; we reserve that for the website. On there, we support Apple Pay as a payment method via Stripe. My fear is that they are going to try to force us to implement in-app purchases for the iOS app to register for the service, which I don't like because I just don't.