> Developers who offer subscriptions can increase the price of a subscription without interrupting service only under certain specific conditions. If the increase does not exceed approximately USD $5 and 50% of the subscription price, or USD $50 and 50% for annual subscriptions, and where permitted by law, developers may change the price without interrupting service. Developers may do this no more than once per year.
> ...
> If the subscription price increase is above the thresholds, exceeds the annual limit, or occurs within territories where the law requires it, you must opt in before the price increase is applied. If you don't opt in to the new price, the subscription will not renew at the next billing period. You can subscribe again within the app or on the Manage Subscriptions page.