I have a similar, but different use case. My app has a relationship-type feature. Think of this as a husband and wife or girlfriend and boyfriend. The wife may sign them up and purchase a subscription in app, but I need to be able to apply that subscription purchase to both the wife and the husband so that when he logs in, on his own device, the subscription that the wife purchased satisfies both her and her husband's requirement to get premium content. Does anyone know how this is achieved?