Question 1

How do I implement receipt verification with RMStore?

Accepted Answer

RMStore provides reference verifiers for iOS 6+ and 7+; set the receiptVerifier delegate at startup using RMStoreAppReceiptVerifier or RMStoreTransactionReceiptVerifier. For custom needs, implement the RMStoreReceiptVerifier protocol to handle server-side or proprietary verification logic.

Question 2

RMStore vs SwiftyStoreKit: which should I use?

Accepted Answer

RMStore is a lightweight Objective-C library with minimal dependencies, ideal for projects already using Objective-C or needing deep customization via protocols. SwiftyStoreKit is Swift-native and may offer better integration for Swift-only apps, but RMStore provides more low-level control.

Question 3

Does RMStore work with Swift projects?

Accepted Answer

Yes, RMStore can be used in Swift projects via bridging headers since it's written in Objective-C. However, integration might require additional setup compared to native Swift libraries, and some Swift conventions may not be fully supported.

Question 4

How to handle failed transactions in RMStore?

Accepted Answer

RMStore sends notifications for failed transactions via storePaymentTransactionFailed, providing error details and transaction information. You can also use block-based failure callbacks in methods like addPayment for immediate error handling and user feedback.

Question 5

Is RMStore suitable for auto-renewable subscriptions?

Accepted Answer

Yes, RMStore supports receipt verification which is crucial for subscriptions. You can use the reference verifiers or custom logic to validate subscription receipts, but note the security caveats for open-source verification in high-stakes apps.

Question 6

What are the security risks of using RMStore's built-in verifiers?

Accepted Answer

The README warns that open-source verification logic might be reverse-engineered, making it less secure for apps with stringent security requirements. It's recommended to implement custom, server-side verification or use proprietary methods to mitigate risks.

RMStore

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