iOS Apps Support: http://www.apple.com/support/ios/
About In-App Purchases: http://support.apple.com/kb/ht4009
To manage auto-renewing subscriptions on a computer:
- Launch iTunes on your computer.
- Choose Store > Sign In from the iTunes menu.
- Enter your Apple ID and password when prompted.
- Choose Store > View My Account. You may be asked to re-enter your Apple ID password. Click View Account.
- From the Account Information screen, scroll to the bottom of the page to the Settings section.
- Click Manage to the right of Subscriptions.
- From the Manage Subscription screen click on the subscription that you would like to manage.
- On the Edit Subscription screen, you will see the current subscription status and available options.
- Choose the desired renewal option by clicking Subscribe.
- You will see a confirmation window asking you to confirm your purchase.
- Click Subscribe to proceed with your purchase.
To turn off auto-renewal on a computer:
- Launch iTunes on your computer.
- Choose Store > Sign In from the iTunes menu.
- Enter your Apple ID and password when prompted.
- Choose Store > View My Account. You may be asked to re-enter your Apple ID password. Click View Account.
- From the Account Information screen, scroll to the bottom of the page to the Settings section.
- Click Manage to the right of Subscriptions.
- From the Manage Subscription screen click on the subscription that you would like to manage.
- On the Edit Subscription screen, you will see the current subscription status and subscription details.
- Click the Off radio button to turn off Auto-Renewal.
- You will see a confirmation window asking you to confirm.
- Click Continue to proceed.
Note: When you turn off auto-renewal, you will no longer continue to be billed for your subscription; however your subscription will continue until it expires.
Apple iTunes Terms of Use
http://www.apple.com/legal/itunes/us/terms.html