How do I cancel my membership?

If an app has a subscription associated with it, see -> Delete apps on your iPhone, iPad, and iPod touch -> Delete apps on your iPhone, iPad, and iPod touch - Apple Support

• If you delete an app, it doesn’t cancel in-app subscriptions that you might have. While deleting an app, you might see a Cancel Subscriptions option. Learn how to cancel your subscriptions.

If you don't want to continue a subscription you need always to cancel that subscription in time, see the following Apple articles:

If you want to cancel a subscription from Apple

If you want to cancel a subscription from Apple - Apple Support

If the subscription that you want to cancel is not listed

If the subscription that you want to cancel is not listed – Apple Support (UK)

To cancel a subscription, on your iPhone or iPad go to:

Settings → Apple ID → Subscriptions

Select the subscription you would like to cancel, tap in and select "Cancel Subscription" If you are in the middle of a period, you will have access to subscriptions until it expires. After that, the subscription closes permanently, or until you choose to subscribe again.

The subscription will be moved to the list of Inactive Subscriptions. You cannot delete it from the overview, but after 1 year of inactivity it will be removed automatically.