Sure they can. But at least they cannot do that without me knowing and without me being able to cancel it. No questions asked and no weird calculations. Apple also sends you renewal or expiry notifications. So a lingering subscription can be cancelled on time.
Most developers don’t do that (don’t wake up a sleeping dog, if that’s a saying).
One missed cancellation, and you’ve actually saved on all that “Apple tax”
> One missed cancellation, and you’ve actually saved on all that “Apple tax”
Even more reason that apps will try and push users to their own payment systems: automatic renewals, difficult cancellations, and more dark patterns. As a user, I'd happily pay an extra 10% for those protections through Apple, but I know I wouldn't pay 10x. Apps will be A/B testing their way to find exactly that profit maximizing threshold.
that's just a red flag to not pay for your app at all, similar to all the gyms that don't take credit cards and only accept preauthorized bank withdraws.