Subscription purchases made through Apple's App Store work slightly differently. Here are the basics.
Payments will be charged to your iTunes Account at confirmation of purchase.
Your subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.
Your account will be charged for renewal within 24-hours prior to the end of the current period. StudyBlue Pro offers 1, 6 and 12 month auto-renewing subscriptions at USD $18.99, $59.99 and $79.99.
Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase.
Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable.
You can find instructions on cancelling App Store subscriptions here: https://support.apple.com/en-us/HT202039
To cancel a subscription that isn't from the App Store, check out: https://help.studyblue.com/hc/en-us/articles/222579848-How-do-I-cancel-my-subscription-
Keywords: Apple iTunes App Store iPhone iPad iOS