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Support in-app purchases and interactions with the App Store using StoreKit.

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Reuse a product id from app A in app B for In-app purchase in my iOS app
I have an app which is already on App Store with In-app purchase. Now I want to integrate In-app purchase in my another app for the same products as in the existing app. Both the apps are using same Apple Account. Can I reuse those Product Ids from the first app in the second one. If yes, what is the ways to use them. Thank you in advance.
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83
Apr ’25
Updating this code to comply with TN3138: Handling App Store receipt signing certificate changes
My Mac app fails to open for some users with the error: "ABC.app does not support the latest receipt validation requirements." I assume this is due to the update of the App Store receipt signing intermediate certificate with one that uses the SHA-256 algorithm. I cannot reproduce this myself and I have trouble figuring out how to address this issue. Below is the code that decrypts the receipt and verifies its signature. How does this code need to be updated to support the new signing certificate? Thanks a lot in advance! inline static void CheckBundleSignature(void) { NSURL *bundleURL = [[NSBundle mainBundle] bundleURL]; SecStaticCodeRef staticCode = NULL; OSStatus status = SecStaticCodeCreateWithPath((__bridge CFURLRef)bundleURL, kSecCSDefaultFlags, &staticCode); if (status != errSecSuccess) { [NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to validate bundle signature: Create a static code", nil]; } NSString *requirementText = @"anchor apple generic"; SecRequirementRef requirement = NULL; status = SecRequirementCreateWithString((__bridge CFStringRef)requirementText, kSecCSDefaultFlags, &requirement); if (status != errSecSuccess) { if (staticCode) CFRelease(staticCode); [NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to validate bundle signature: Create a requirement", nil]; } status = SecStaticCodeCheckValidity(staticCode, kSecCSDefaultFlags, requirement); if (status != errSecSuccess) { if (staticCode) CFRelease(staticCode); if (requirement) CFRelease(requirement); [NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to validate bundle signature: Check the static code validity", nil]; } if (staticCode) CFRelease(staticCode); if (requirement) CFRelease(requirement); } static NSData *DecodeReceiptData(NSData *receiptData) { CMSDecoderRef decoder = NULL; SecPolicyRef policyRef = NULL; SecTrustRef trustRef = NULL; @try { OSStatus status = CMSDecoderCreate(&decoder); if (status) { [NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to decode receipt data: Create a decoder", nil]; } status = CMSDecoderUpdateMessage(decoder, receiptData.bytes, receiptData.length); if (status) { [NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to decode receipt data: Update message", nil]; } status = CMSDecoderFinalizeMessage(decoder); if (status) { [NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to decode receipt data: Finalize message", nil]; } NSData *ret = nil; CFDataRef dataRef = NULL; status = CMSDecoderCopyContent(decoder, &dataRef); if (status) { [NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to decode receipt data: Get decrypted content", nil]; } ret = [NSData dataWithData:(__bridge NSData *)dataRef]; CFRelease(dataRef); size_t numSigners; status = CMSDecoderGetNumSigners(decoder, &numSigners); if (status) { [NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to check receipt signature: Get singer count", nil]; } if (numSigners == 0) { [NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to check receipt signature: No signer found", nil]; } policyRef = SecPolicyCreateBasicX509(); CMSSignerStatus signerStatus; OSStatus certVerifyResult; status = CMSDecoderCopySignerStatus(decoder, 0, policyRef, TRUE, &signerStatus, &trustRef, &certVerifyResult); if (status) { [NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to check receipt signature: Get signer status", nil]; } if (signerStatus != kCMSSignerValid) { [NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to check receipt signature: No valid signer", nil]; } return ret; } @catch (NSException *e) { @throw e; } @finally { if (policyRef) CFRelease(policyRef); if (trustRef) CFRelease(trustRef); if (decoder) CFRelease(decoder); } }
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133
Jul ’25
Subscription Renewals in TestFlight Sandbox Testing
What happens after 12 renewals? Does the subscription expire completely? The next day when I try to manage settings for my sandbox account it says it cannot connect. I cannot see the status of subscription in: Settings-> App Store -> Sandbox Account -> Manage Logging out and logging in of my regular account does not fix that. When I login with a different non-testflight sandbox account I can finally edit those settings. There are some missing details in documentation explaining testflight sandbox accounts. Do these accounts stop working after 12 auto-renewals? I need more specific details in order to ensure subscriptions will work properly during production.
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526
Jan ’25
Recurring subscriptions return with an "Unknown Error" fail message
Testing recurring subscriptions in a new release in both development environment and in Test Flight, we see an increased percentage of failed calls returning from Apple server. The return failure message is that an unknown error occurred. The behavior is not consistent and most often we get a failure and another attempt succeeds. We do get around 50% failures which is alarming and cannot be explained to the end user. We have also experimented with previous test versions that are in production currently and we see the same behavior, so this is not isolated to the most recent release we plan nor to a specific application we have. Past testing in previous releases did not return such high percentage of failures from Apple server. Have you encountered such an issue? We have no idea what may cause Apple server to return with this "Unknown error" and there is no log we can consume from Apple subscription service. Appreciate your help on this.
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88
Apr ’25
Converting Payed App to Freemium
I just converted my App to Freemium, but the method is used to give user, that bought the App before it was free, access to the paid futures seems not to be working. I am getting the original Purchase Date from the AppTransaction (https://developer.apple.com/documentation/storekit/apptransaction/originalpurchasedate) and comparing that to a set date where the App Model changed. In Test Flight this is working without any Problems but on the Live System, users that have purchased the App do not get access! let shared = try await AppTransaction.refresh() if case .verified(let appTransaction) = shared { result(appTransaction.originalPurchaseDate.ISO8601Format()). } I am using flutter to develop the App and the result()... send the string back to the flutter side. Here is the code of the Flutter side: Future<void> restorePurchases() async { SubscriptionProvider().updatePayment(PurchaseStatus.pending); await InAppPurchase.instance.restorePurchases(); if (Platform.isIOS) { DateTime changedToFreemium = DateTime.utc(2025, 4, 7, 11, 0, 0); String? purchaseDateRaw = await IosFlutterChannel().getOriginalPurchaseDate(); if (kDebugMode) { print("Purchase Date Raw: $purchaseDateRaw"); } if (purchaseDateRaw != null) { DateTime purchaseDate = DateTime.parse(purchaseDateRaw); if (purchaseDate.isBefore(changedToFreemium)) { if (kDebugMode) { print("Restoring legacy purchases"); } SubscriptionProvider().update(true, SubscriptionStatus.active, SubscriptionType.fs_lifetime); } else { if (kDebugMode) { print("Not restoring legacy purchases"); } } } } SubscriptionProvider().updatePayment(PurchaseStatus.purchased); } Console Log when running in Test Environment: flutter: Purchase Date Raw: 2013-08-01T07:00:00Z flutter: Restoring legacy purchases Thanks!
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124
Apr ’25
Proper way to set up Sandbox iOS for Purchase Testing
I cannot explain how frustrating this is. Not that I want to compare to Android, but in 3 years of QA Testing my app, Android works like a dream, while iOS fights with me EVERY SINGLE STEP OF THE WAY. Hopefully someone here can tell me what I am missing/doing wrong/which god I must appease to get this to work. I have 3 REAL iPhones of varying iOS versions and ages. But they are all proper actual iPhones. We use google accounts at this company, so my primary email is a gmail one. I have created MANY sandbox accounts inside App Store Connect. Currently I have 2, and 2 of my devices (both 14's one of which is a Pro) have my Primary account as the main account for the device. But they both also have a Sandbox account which is simply my main email with a +sandbox in it to make it a new unique email. Here is the problem, nothing works as expected ever. I can install my Staging and Production apps from TestFlight, then I can make a subscription purchase as a customer would and I SHOULD see that subscription in my Sandbox right? That's the point of a Sandbox and TestFlight is it not? But in ALL cases whenever I try to view my 'Sandbox Subscriptions' it tells me I don't have any. Now, sometimes, very occasionally, I get a specific error message inside my app when attempting to make a purchase, this one states something like 'You already have a subscription, please restore it instead...' which makes no sense. Since it clearly states that I have none. But this message has a 'Manage' button to manage my subscriptions, tapping it lads me to a windows which amazing DOES have a subscription in it. But attempting to 'Cancel' it does nothing, just refreshes the screen to be the same. Now I think that this subscription is actually attached to the primary account on the device and NOT the sandbox account. So when this happens I cannot subscribe, I cannot restore, and I cannot manually alter the subscription within iOS. So I am stuck at this point. What am I doing wrong, am I setting this all up in the wrong order? Do I need to install some kind of profile or security cert, do I need to give a pint of blood to Imhotep? What am I missing. I even once sat on the phone for 90 minutes with an Apple Support Rep who took me through it step by step, same result. Also I just noticed that inside 'App Store Connect' when you look at the list of 'Sandbox' accounts there is a column for 'Last Purchase' which is entirely blank, apparently after a year of use I have NEVER purchased on the Sandbox, which is another reason I think my subs are going to the main email, not the sandbox one. I tried using the sandbox email as the main account for the whole device, I can't recall the result but it was worse and didn't work at all. So that's not it. https://developer.apple.com/help/app-store-connect/test-in-app-purchases/create-a-sandbox-apple-account/ The instructions on this page are not detailed enough and were not helpful to me. All I really want to know is how to fully setup a real actual iPhone for TestFlight and Sandbox testing of a app. WHat order do I create accounts, validate emails, attach to devices, login with etc etc etc. Step by step, nothing no matter how mundane missed out. A true idiots guide to making this work for me. Testing this on Android always takes 5 mins. iPhone, I'm lucky if I am done in half a day. Please help and thanks for reading!
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94
Jul ’25
tvOS In-app purchase not working
I am trying to implement in-app purchases in Apple TV. I added a "non-consumable" product and started testing in Sandbox, but it did not work properly. While I am trying to fetch the product from the appstore, it won't give any responses like success or failure. So that our app gets rejected in the App Store. Please provide me the steps to implement in-app purhcase in Apple tvos using Swift. Note: The same code is working fine in iOS.
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310
Feb ’25
SKErrorDomain Code 2 Problem
We are facing a serious issues with in app purchases in our app. We offer 3 IAP: auto-renewable subscription 1W, auto-renewable subscription 1Y, non-consumable one-time purchase (LifeTime access) In our case 90-95% of transactions fail and we mostly get SKError code=2 . Sometime purchase fails several times for the same user so it’s very hard to believe that user intentionally cancels transaction for the same product 4 or even 5 times in a row. It happens regardless iOS version, device model, our app version. We've checked multiple threads with the same issue but coudn't find any solution. We do not offer any promotions, product identifiers are valid... Some users are able to make a purchases without any issues.
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238
Jul ’25
Behavior of the "get all subscription statuses" API.
We are running auto-renewing subscriptions with StoreKit2 and the “get all subscription statuses” API is behaving unexpectedly. record the originalTransactionId from the iPhone to the server side when purchasing a subscription with Storekit2. query the get all subscription statuses API from the server side with the originalTransactionId recorded. get all subscription statuses returns a response, but there is no data in the response that matches the originalTransactionId. I have an error on my system because I have built my system on the assumption that all subscriptions including originalTransactionId will be returned.
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443
Feb ’25
App crashes on launch due to missing Swift Concurrency symbol
I'm encountering a crash on app launch. The crash is observed in iOS version 17.6 but not in iOS version 18.5. The only new notable thing I added to this app version was migrate to store kit 2. Below is the error message from Xcode: Referenced from: &lt;DCC68597-D1F6-32AA-8635-FB975BD853FE&gt; /private/var/containers/Bundle/Application/6FB3DDE4-6AD5-4778-AD8A-896F99E744E8/callbreak.app/callbreak Expected in: &lt;A0C8B407-0ABF-3C28-A54C-FE8B1D3FA7AC&gt; /usr/lib/swift/libswift_Concurrency.dylib Symbol not found: _$sScIsE4next9isolation7ElementQzSgScA_pSgYi_tYa7FailureQzYKFTu Referenced from: &lt;DCC68597-D1F6-32AA-8635-FB975BD853FE&gt; /private/var/containers/Bundle/Application/6FB3DDE4-6AD5-4778-AD8A-896F99E744E8/callbreak.app/callbreak Expected in: &lt;A0C8B407-0ABF-3C28-A54C-FE8B1D3FA7AC&gt; /usr/lib/swift/libswift_Concurrency.dylib dyld config: DYLD_LIBRARY_PATH=/usr/lib/system/introspection DYLD_INSERT_LIBRARIES=/usr/lib/libLogRedirect.dylib:/usr/lib/libBacktraceRecording.dylib:/usr/lib/libMainThreadChecker.dylib:/usr/lib/libRPAC.dylib:/System/Library/PrivateFrameworks/GPUToolsCapture.framework/GPUToolsCapture:/usr/lib/libViewDebuggerSupport.dylib``` and Stack Trace: ```* thread #1, stop reason = signal SIGABRT * frame #0: 0x00000001c73716f8 dyld`__abort_with_payload + 8 frame #1: 0x00000001c737ce34 dyld`abort_with_payload_wrapper_internal + 104 frame #2: 0x00000001c737ce68 dyld`abort_with_payload + 16 frame #3: 0x00000001c7309dd4 dyld`dyld4::halt(char const*, dyld4::StructuredError const*) + 304 frame #4: 0x00000001c73176a8 dyld`dyld4::prepare(...) + 4088 frame #5: 0x00000001c733bef4 dyld`start + 1748``` Note: My app is a Godot App and uses objc static libraries. I am using swift with bridging headers for interoperability. This issue wasn't observed until my last version in which the migration to storekit2 was the only notable change.
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157
Jul ’25
How to Simulate Subscription Cancellation with Products.storekit in Simulator?
Hi, Currently, instead of using a real device and test account for in-app purchase testing, we are using Products.storekit with the Simulator. Our app offers a subscription plan with a 3-day free trial. We would like to simulate the following test scenarios: User cancels the subscription within the 3-day free trial period. User cancels the subscription after the 3-day free trial period. However, in Xcode, under Debug > StoreKit > Manage Transactions..., we couldn’t find an option to simulate a subscription cancellation. There is an option to refund the purchase, but we believe this is not the same as a cancellation. Do you have any idea how we can simulate these two cases using Products.storekit and the Simulator? Thanks in advance!
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76
Apr ’25
storefront.countryCode is fixed to USA in iOS 26 beta
Whether using Storefront.current?.countryCode or SKPaymentQueue.default().storefront?.countryCode, both are returning "USA" only. (It used to return the correct country code before the update.) In the sandbox environment, the country code is returned correctly, but in the TestFlight environment, it always returns "USA". There's no mention of this behavior in the beta release notes, so I'm posting it here for visibility.
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141
Jul ’25
Postback copies dev testing with AdAttributionKit
Hello, Having bad times with Development Postback copies receival on our custom server. Current setup: App is configured to be advertised (https://developer.apple.com/documentation/adattributionkit/configuring-an-advertised-app) AdAttributionKit - Opt in for Reengagement Postback Copies ✅ AdAttributionKit - Postback Copy URL ✅ AdAttributionKit - Ad Network Identifiers ✅ Configured backend https://{name}.com/.well-known/appattribution/report-attribution/ (POST) ✅ Devices with iOS 18.4 (with Postaback Development tool and AdAttribution developer mode Enabled) Tried different Postback setup combinations, with different app builds (debug, release installed from xcode/testflight) and with AdAttribution developer mode Enabled/Disabled - doesn't make any difference. Console log: Found 0 postbacks eligible for transmission for environments: Any advise is very much appreciated
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141
Apr ’25
Renewal Info never contains offerType
Signed renewal info from 'Get Subscription Statuses' or in server notifications never has the offerType or offerDiscountType even when the corresponding transaction does have those values set. Our offer is a free trial. Do these properties refer to something different in JWSRenewalInfoDecodedPayload than they do in transactions? I'm trying to determine whether a subscription (identified by originalTransactionId) is currently in a free trial based on server notifications. The status doesn't tell us if the subscription is currently in free trial and the signedTransactionInfo may be for an older transaction.
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662
Feb ’25
Inconsistent appTransactionId in Transaction History
Issue Description When using the App Store Server API endpoint GET v2/history/{transactionId} to retrieve transaction history for a specific transaction, I'm observing unexpected changes in the appTransactionId field across related transactions in the same subscription group. Important Context: This is a "clean" auto-renewable subscription with no user intervention - the user has had continuous auto-renewals without any upgrades, downgrades, cancellations, or resubscriptions. The subscription has been renewing automatically and successfully throughout the entire period. API Call GET v2/history/1000000000000001 Response Data The API returns the following transaction history, where I notice the appTransactionId values are inconsistent across what should be a straightforward auto-renewal sequence: Note: The data below has been sanitized for privacy protection (IDs, bundle identifiers, etc. have been replaced with example values), but the logical relationships, date sequences, and the core issue remain identical to the original data. Array ( [0] => Array ( [transactionId] => 1000000000000001 [originalTransactionId] => 1000000000000001 [webOrderLineItemId] => 1000000000000001 [bundleId] => com.example.myapp [productId] => MonthlySubscription [subscriptionGroupIdentifier] => 20000000 [purchaseDate] => 1743784032000 [originalPurchaseDate] => 1743784034000 [expiresDate] => 1746376032000 [quantity] => 1 [type] => Auto-Renewable Subscription [inAppOwnershipType] => PURCHASED [signedDate] => 1751868174651 [environment] => Production [transactionReason] => PURCHASE // Original purchase [storefront] => USA [storefrontId] => 143441 [price] => 100000 [currency] => USD [appTransactionId] => 700000000000000001 // Different value ) [1] => Array ( [transactionId] => 1000000000000002 [originalTransactionId] => 1000000000000001 [webOrderLineItemId] => 1000000000000002 [bundleId] => com.example.myapp [productId] => MonthlySubscription [subscriptionGroupIdentifier] => 20000000 [purchaseDate] => 1746376032000 [originalPurchaseDate] => 1746347349000 [expiresDate] => 1749054432000 [quantity] => 1 [type] => Auto-Renewable Subscription [inAppOwnershipType] => PURCHASED [signedDate] => 1751868174651 [environment] => Production [transactionReason] => RENEWAL // First auto-renewal [storefront] => USA [storefrontId] => 143441 [price] => 100000 [currency] => USD [appTransactionId] => 700000000000000002 // Same for renewals ) [2] => Array ( [transactionId] => 1000000000000003 [originalTransactionId] => 1000000000000001 [webOrderLineItemId] => 1000000000000003 [bundleId] => com.example.myapp [productId] => MonthlySubscription [subscriptionGroupIdentifier] => 20000000 [purchaseDate] => 1749054432000 [originalPurchaseDate] => 1749025657000 [expiresDate] => 1751646432000 [quantity] => 1 [type] => Auto-Renewable Subscription [inAppOwnershipType] => PURCHASED [signedDate] => 1751868174651 [environment] => Production [transactionReason] => RENEWAL // Second auto-renewal [storefront] => USA [storefrontId] => 143441 [price] => 100000 [currency] => USD [appTransactionId] => 700000000000000002 // Same as previous renewal ) [3] => Array ( [transactionId] => 1000000000000004 [originalTransactionId] => 1000000000000001 [webOrderLineItemId] => 1000000000000004 [bundleId] => com.example.myapp [productId] => MonthlySubscription [subscriptionGroupIdentifier] => 20000000 [purchaseDate] => 1751646432000 [originalPurchaseDate] => 1751617840000 [expiresDate] => 1754324832000 [quantity] => 1 [type] => Auto-Renewable Subscription [inAppOwnershipType] => PURCHASED [signedDate] => 1751868174651 [environment] => Production [transactionReason] => RENEWAL // Third auto-renewal [storefront] => USA [storefrontId] => 143441 [price] => 100000 [currency] => USD [appTransactionId] => 700000000000000002 // Same as previous renewals ) ) Questions Is this behavior expected? Should the appTransactionId change between the original purchase and subsequent renewals within the same subscription group, especially when there are no user actions (upgrades/downgrades/cancellations/resubscriptions)? What determines the appTransactionId value? The documentation doesn't clearly explain when this identifier might change or what triggers a new value. This is particularly puzzling since this is a straightforward auto-renewal scenario. How should we handle this in our backend logic? Should we treat transactions with different appTransactionId values as separate entities, or should we rely on originalTransactionId for grouping related subscription transactions? Is this a known issue? We've seen similar concerns in the community regarding transaction ID inconsistencies, but this specific case involves a clean auto-renewal flow without any complicating factors.
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173
Jul ’25
Why does a purchase result in success unverified?
A purchase can result in success with verificationResult .unverified. Is there a list of reasons for which the transaction might be unverified and how should i handle it in my app? From my understanding, a successful unverified transaction means the user has already paid for the purchase. So, do i just ignore the unverified transaction or do i provide content to the user anyways?
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2
111
Jul ’25
Wrong Product.displayPrice?
I am using StoreKit 2 for my products and noticed that users from Ukraine (for example) receive a wrong Product.displayPrice. The App Store works with USD but shows the local currency UAH. Any chance to display the correct currency (USD)?
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71
Apr ’25