Cancel automatic renewal of a subscription in the iTunes / App Store

To cancel the automatic renewal of a subscription purchased via the iTunes / App Store, and stop future payments, please do the following:

1. Go to "Settings" (on your iPhone) -> "iTunes Store / App Store" -> "Apple ID"

2. Select on "Display Apple ID"

3. Enter your password

4. In the "Subscription(s)" section, select "Manage"

5. Select your subscription and deactivate it.