Here are the steps to turn off auto-renewal with the JibJab app:
- Tap the 'Settings' app icon in the home screen of your device.
- Scroll down and tap iTunes Store & App Store.
- Tap your e-mail and Apple ID, click View Apple ID and enter your password.
- Under Subscriptions, click Manage and select JibJab.
- Turn off the auto-renewal option and tap Done.