根据 App Store 的官方文档《App Store Review Guidelines》中 3.1.2(a) 的规定:
If you are changing your existing app to a subscription-based business model, you should not take away the primary functionality existing users have already paid for。
如果开发者想要将付费模式切换为订阅模式,不可以对原有的用户移除已经付费的功能。
