貌似 由 Apple 的客服人员全权处理.. "
According to an answer one of my users received from Apple, refunding an app means they will no longer receive updates to the app, but doesn't remove the app from the device. IAP appears to work the same.

I am wondering if there is not a way by using restoreCompletedTransactions to check for the iAP purchase, but this would pop up a request for the user's iTunes password, so its use is limited."

退款并不会影响使用 只不过不能更新..

1楼 @cnsoft Apple客服处理的结果，作为开发者完全都不知情

那伙人太恶心了

2楼 @athurg 貌似回到一个焦点问题就是 信用 . 要真是有人冲了钱 买了钻 又找apple 退了钱 游戏却不知道 ,是个问题. 不过应该是个例.

4楼 @cnsoft 相信我，这个不是个例。想象一下一个月收入被退款为负数，是多么恐怖的事儿

退款还会导致排名大幅度下降，这个更苦逼。

5楼 @athurg 这不科学啊 。。

现在在做 IAP ，貌似也有这个问题。请问大家有好点的解决方案吗？难道就只能吃哑巴亏啊？

尝试下面方法，不知道是否正确。如果可行，告知一下。

http://stackoverflow.com/questions/6439482/how-does-apple-notify-ios-apps-of-refunds-of-in-app-purchases-iap

The strategy is:

a. You save the latest_receipt ("MIIUJgYJKoZIhvc..." base64) field in your DB, associated with the user account.

b. Every day you query apple to validate all the receipts, by sending them the base64 receipt from saved latest_receipt field.

c. In the receipt you check if there is a cancellation_date field. If you find it, treat it according to apple documentation:

https://developer.apple.com/library/ios/releasenotes/General/ValidateAppStoreReceipt/Chapters/ReceiptFields.html

Cancellation Date

For a transaction that was canceled by Apple customer support, the time and date of the cancellation.

ASN.1 Field Type 1712

ASN.1 Field Value IA5STRING, interpreted as an RFC 3339 date

JSON Field Name cancellation_date

JSON Field Value string, interpreted as an RFC 3339 date

Treat a canceled receipt the same as if no purchase had ever been made.

2020了. apple 加了 S2S通知.