Can i use iTunes card balance in the app store?
I have a balance in my account at the iTunes store and want to use some of it in the app store. Can you do this and how?
Yes, they are part of the group of iTunes connected stores using the same account, including credit on the account. Remember, if in the US there may be local sales taxes on App Store purchases, so you need enough credit for the content and the tax.
Late 2012 Mac mini, macOS ?; Watch, 38 mm silver AL, watchOS 3; iPad Air 2 & iPhone 6+, iOS 10.0.1; Apple Airport Express