问题
I have an app in the iTunes store that has full functionality. I attempted to release a Free version which contains half of the functionality, and contains a link to the full version if the user tries to use the other functions.
Apple rejected the app on the basis that rather than having two apps, I ought to have the main app released for free and have the extra functions unlockable using in-app purchasing.
That's fine; I can do this. The only problem is that since I released the full version initially, some people have already paid for and downloaded the full version. When I update this app so that it is free, it will be restricted by default. Those users that have paid for the full version will have lost the functionality they've paid for.
I don't really want to release a second version of the app since I intend on continuing to update the app and managing two release streams would be unwieldy.
Is it possible to somehow offer for free the in-app purchase to those users that have already bought the full version of my app when I update the app to the new (free, in-app supported) version?
Edit: An (unpreferred) alternative would be a way of refunding the purchases to the original buyers, along with a note explaining why. Any ideas how?
回答1:
This is tricky due to section 3.3.3 of the license agreement and Attachment 2. I'm not a lawyer so I'll save my interpretation but, read them.
Another option would be to make the free version a new, different app and leave the original one in the store but unavailable. Then you can still publish updates to it but new users won't see it. Apple would probably allow this considering you are still only presenting one app to new users. The downsides are (1) you have to maintain two versions and (2) you have to start over in terms of reviews etc.
回答2:
What I'd do is add a already paid option within the application itself, and then allow users to enter a license code, or email address depending what you prefer, Which you can automatically issue from their contact details if you have them or ask them to contact you if you don't, which most will as they have paid.
Now as far as the licensing and the verification of these codes you could setup a cheap VPS which verify s the code and only activates with codes that you have entered on the server, meaning you won't fall victim of Keygeners.
Just my 2 cents.
回答3:
If your app doesn't currently have a username/password registration, I would suggest releasing an update to the paid app that explains to your users on an initial popup view something like:
Thank you for supporting our app. Due to changes in Apple's policies, we will be converting this app into a free app with in-app upgrades. Since you already purchased the full app, you will be awarded all features! Please input an [email_address or username] so that we can provide a painless transition.
If your app has a user login mechanism already in place (username/password), then just store those details and have the user log in later in the "free" app to unlock all of the features.
Obviously, both of these suggestions require a backend for validation, but shouldn't be too difficult to create that.
来源：https://stackoverflow.com/questions/13753294/giving-in-app-purchases-to-specific-users-for-free