Q: Is it possible to use an iTunes gift card to purchase in app items such as gems in knights and dragons?

Hello Rhicks636,

Thanks for the question. The following resource may provide an answer to your question:

App Store Frequently Asked Questions (FAQ)

http://support.apple.com/kb/HT2001

Accepted payment types

Shopping the App Store requires an iTunes Store account. When you create an iTunes Store account, you must provide a payment method for your purchase. The available payment methods vary by country, but typically you can use credit cards, gift cards, store credit, or PayPal.

 

In countries where the iTunes Store only sells applications, the accepted payment methods are Visa, MasterCard, and American Express. Other payment types such as gift cards, store credit, monthly allowances, and PayPal are not accepted. Depending on your App Store country, prices are listed in either US Dollars or Euros.

With the above information kept in mind, if you have a gift card balance on your Account, the purchased content (in this case, and in-app purchase) will be debited from the balance.

Thanks,

Matt M.