Canceling a Zoom subscription on the Apple App Store
If you purchased your Zoom subscription through Apple's App Store, you must cancel it using your Apple account. Zoom cannot cancel or manage subscriptions billed by Apple.
Note: Starting with Zoom app version 6.5.0, new iPhone and iPad users in the US can purchase, manage, and cancel subscriptions through the Zoom website. If you subscribed on zoom.us, you must cancel your subscription through your Zoom account rather than the Apple App Store.