Kinda. Apple require in-app subscriptions prices to be the same or less than what the subscription costs if bought elsewhere.
A possible solution could be to offer a separately priced subscription for people who want iOS access in addition to what's normally provided, and then keep the prices consistent in-app and outside. But I'm not sure how Apple would feel about a solution like that, it would be the closest thing to an explicit Apple tax we've seen, and it directly hurts the consumer (which Apple seem to care more about than hurting developers/"app store-vendors").
A possible solution could be to offer a separately priced subscription for people who want iOS access in addition to what's normally provided, and then keep the prices consistent in-app and outside. But I'm not sure how Apple would feel about a solution like that, it would be the closest thing to an explicit Apple tax we've seen, and it directly hurts the consumer (which Apple seem to care more about than hurting developers/"app store-vendors").