> 3.1.3(b): Multiplatform Services: Apps that operate across multiple platforms may allow users to access content, subscriptions, or features they have acquired

> 3.1.3(b): Multiplatform Services: Apps that operate across multiple platforms may allow users to access content, subscriptions, or features they have acquired in your app on other platforms or your web site, including consumable items in multi-platform games, provided those items are also available as in-app purchases within the app. This is worded so broadly, that it can perfectly be applied to browsers and email clients. User plays a browser or PBEM game that has subscriptions? Ka-ching