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doubleone 你说的也不是完全不行，但总觉得很别扭。希望你们产品上线后，可以回来回这个贴，跟大家说说结果。
如果使用Consumable, 比如我买了两个1个月的迅雷会员，放在那里不用，又可以随时用掉。
Skype的点数/VPN流量/游戏金币，适合用consumable类型。
附：
http://developer.apple.com/library/ios/#documentation/NetworkingInternet/Conceptual/StoreKitGuide/APIOverview/OverviewoftheStoreKitAPI.htmlConsumable products must be purchased each time the user needs that item. For example, one-time services are commonly implemented as consumable products.
分割线
Auto-renewable subscriptions are delivered to all of a user’s devices in the same way as non-consumable products. However, auto-renewable subscriptions differ in other ways. When you create an auto-renewable subscription in iTunes Connect, you choose the duration of the subscription. The App Store automatically renews the subscription each time its term expires. If the user chooses to not allow the subscription to be renewed, the user’s access to the subscription is revoked after the subscription expires. Your application is responsible for validating whether a subscription is currently active and can also receive an updated receipt for the most recent transaction.
Non-renewing subscriptions are a mechanism for creating products with a limited duration. Non-renewing subscriptions differ from auto-renewable subscriptions in a few key ways:
The term of the subscription is not declared when you create the product in iTunes Connect; your application is responsible for providing this information to the user. In most cases, you would include the term of the subscription in the description of your product.
Non-renewing subscriptions may be purchased multiple times (like a consumable product) and are not automatically renewed by the App Store. You are responsible for implementing the renewal process inside your application. Specifically, your application must recognize when the subscription has expired and prompt the user to purchase the product again.
You are required to deliver non-renewing subscriptions to all devices owned by the user. Non-renewing subscriptions are not automatically synchronized to all devices by Store Kit; you must implement this infrastructure yourself. For example, most subscriptions are provided by an external server; your server would need to implement a mechanism to identify users and associate subscription purchases with the user who purchased them.