How to Manage existing subscriptions
Open Settings app
In order to view your subscriptions and make amendments to them, you first need to go to the Settings app and tap your name, at the very top of the page. This will take you to your Apple ID settings page.
View Apple ID
A pop-up pane will now appear, giving you some options associated with your Apple ID. Select “View Apple ID” at the top and you’ll be asked to sign in, using either your password or Touch ID (or Face ID on iPhone X).
Check your subs
You can now view all your subscriptions — active ones are listed first, followed by any that have expired. It is possible to resubscribe to lapsed subscriptions as well as terminate those you no longer want.
Select App Store
Tap the entry for iTunes & App Store — you’ll find it in the second group of options. On the next page, you need to tap your Apple ID. Make sure it is the ID associated with the subscriptions that you want to manage.
Go to Subscriptions
The next page will display information associated with your Apple ID. To view your subscriptions and memberships, scroll down and tap Subscriptions. (If this does not appear, you don’t have any active subscriptions!)
Select a sub
Tap one of the subscriptions in your list to view its current terms and any available payment tier options. Tap Cancel to bring it to an end (usually on its renewal date, rather than immediately). It will then appear under Expired.