To avoid the problem of subscriptions accidental in App Store, Apple has added an extra step for your own subscription system in the same. Now you will appear a popup with the legend “Confirm Subscription” before the process is complete.
After the authentication via Touch ID or Face ID is displayed in this new window. Subscriptions accidental are a recurrent problem, especially for users who use iPhone with Touch ID.
Apple has already done other steps to avoid these problems, and the derivatives of subscriptions that are unclear or hidden. For iOS apps, and from the beginning of this year, the company updated the documents needed for the subscriptions, indicating to programmers that have to point in a clear manner the prices and other details.