Some in-apps are available as a subscription via the NAVIGON app. To cancel a subscription because of a change or just because it is no longer necessary, the respective App Store has included a function via your personal account.
Important: The App Store is responsible for the administration of all purchases. If you have any queries regarding procedures or problems with the subscription, please contact your App Store customer support first.
Subscriptions are not bound to one another and will not be canceled automatically if you change to another product. Cancellations will have to be done manually.
How to cancel a subscription is explained via the following link :
iOS - View, change, or cancel your subscriptions