Follow these steps to disable in-app purchases from your device:
- From your home screen, tap on the “Settings” app button
- Select the “General” category in the Settings menu
- Scroll down to the “Restrictions” category in the “General” menu
- Tap the “Enable Restrictions” button
- If this is your first time enabling restrictions you may be asked to set a Restrictions Passcode. You will need to create and enter a four digit passcode (enter it twice to set it).
- Once the passcode is set, scroll down to the “In-App Purchases” setting. Slide the button to “Off” to disable In-App Purchases.