#1 - March 23, 2013, 10:12 a.m.
11.1 Apps that unlock or enable additional features or functionality with mechanisms other than the
App Store will be rejected
11.2 Apps utilizing a system other than the In App Purchase API (IAP) to purchase content, functionality, or services in an app will be rejected
But what about paying with our battle.net account? Can the money store be used in Hearthstone?