ReceiptKit provides an easy way to verify iOS receipts without having to involve your own server.
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Get the project using git as JSONKit is configured as a submodule, or download JSONKit manually.
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Copy the subfolder libReceiptKit into your Xcode project.
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Browse to your TARGET -> Build Phases -> Compile Sources. Add the Compiler Flag -fno-objc-arc to JSONKit.m as JSONKit does not support ARC.
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Import "ReceiptKit.h" in your SKPaymentTransactionObserver class.
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When you get the paymentQueue:updatedTransactions: callback from StoreKit, send the SKPaymentTransaction to ReceiptKit like this for synchronous operation (easiest but will slow down you app):
[ReceiptKit verifyPaymentTransactionSynchronously:paymentTransaction]
- The above method will return TRUE if the receipt is valid, or FALSE if the receipt is invalid.
Follow the above instructions to step 4.
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Add the protocol to your SKPaymentTransactionObserver class.
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Implement the receiptKitResponseForReceipt:status method in the same class.
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When you get the paymentQueue:updatedTransactions: callback from StoreKit, send the SKPaymentTransaction to ReceiptKit like this for asynchronous operation:
[ReceiptKit verifyPaymentTransaction:paymentTransaction withDelegate:self];
- When ReceiptKit is done processing the receipt, it will call your delegates receiptKitResponseForReceipt:status with the status being either ReceiptKitReceiptStatusVerified or ReceiptKitReceiptStatusInvalid.
- ReceiptKit has been tested on iOS 5 and iOS 6 but should work on iOS 4 as well.
ReceiptKit is licensed under the MIT license.
Copyright (c) 2012 Appulize
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