How Do I Cancel My Subscription?
To cancel an app subscription, visit the ‘Manage your subscriptions‘ screen on your iOS device and tap the Cancel button to end your subscription and prevent auto-renewal.
Here is Apple’s support page on managing subscriptions:
No Cancel button?
If your Edit Subscription page does not display a Cancel button anywhere, don’t worry – your subscription is already set to expire. There should be an expiration date towards the top of your Manage Subscriptions page near our app icon.
If there is no Cancel button AND you see an Auto-Renew date, please contact Apple immediately as this is a technical issue:
As a reminder, app developers are not able to edit, manage or cancel your app subscriptions, or provide refunds. Apple handles all of this.
We’re sorry to see you go and hope that you enjoyed our app!