StoreKit

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

StoreKit Documentation

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'Invalid value for purchase intake' error
Hello, I recently saw this error from StoreKit in the Console - 'Invalid value for purchase intake' - while debugging a SKPayment subscription issue (where a valid receipt should be verified and restored, but isn't for one user). I haven't been able to find any documentation about this message and wondered if it was related at all. There were two other logs from StoreKit right before saying: 'Found 3 products in receipt with ID' 'Processing ad attribution purchase intake' Does anyone know what 'invalid value for purchase intake' is referencing? We don't have the AdAttributionKit implemented. It sounds like it might be related to that instead? Thank you
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94
Jul ’25
Download ID in AppTransaction
Hello, I would like to draw your attention to the following imperfection. For validating purchases of my paid application Guru Maps Pro, I use the download id. This is a unique ID that can replace the Transaction ID for paid applications. However, with the release of the new AppTransaction API, this field is no longer present in the data. I tried parsing the receipt, but that field is absent there as well. The only way to obtain the download id is to send the receipt to the deprecated /verifyReceipt endpoint. This deprecated status concerns me, because at some point it might stop working. Let me explain a little about why I need this. My users have a guru-account, which they can use both in the web version and on Android. When a user purchases the paid version of the application, they can access the paid features on both web and Android. This works great for in-app purchases, where there is a transaction ID, but it may soon stop working for paid applications because there is no way to determine any ID associated with the purchase. Transaction ID or Download ID – I don't mind which.
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355
Feb ’25
How to properly handle StoreKitError or PurchaseError from product.purchase()
Hello! We are implementing consumable IAP for iOS using StoreKit 2 together with our own server backend. Our happy path looks like this: 1. Call /prepare on our server • We only allow one purchase at a time, so this fails if a pending transaction already exists. 2. Call /purchase via StoreKit 3. If successful, call /complete on our server 4. Call .finish() on the Transaction ⸻ The Problem Some users report being charged by Apple but not receiving coins. I suspect this happens in rare cases where the purchase flow throws an exception: • Every time we throw, we immediately cancel the transaction on our server. • However, some errors may actually be temporary. StoreKit seems to recover by later sending an update through Transactions.updates. • When that happens, since the transaction was already canceled on our server, we cannot match it. As a result, we just call .finish() without granting consumables. ⸻ Additional Observations From user logs, the issue tends to appear when the following errors are reported: • リクエストを完了できません。 • Triggered by: StoreKit.notEntitled • Triggered by: StoreKit.unknown • ヘルパーアプリケーションと通信できませんでした。 I was not able to reproduce the last one, even when testing all possible StoreKit configuration errors. Some sources suggest this may be a rare case where the app cannot communicate with the App Store itself. Additionally, affected users often seem to be using non-standard payment methods (PayPay, gift cards, carrier billing, etc.) rather than credit cards. ⸻ My Question What is the best practice for handling StoreKitError and PurchaseError? Specifically: • Should some of these errors be treated as temporary instead of final? • How should we ensure users always receive their consumables in such cases? ⸻ Code do { let result = try await wrapper.product.purchase() switch result { case .success(let result): let transaction = try StoreKitVerifier.checkVerified(result) let iOSPurchase = IOSPurchase(transaction: transaction, jws: result.jwsRepresentation) return .Success(purchase: iOSPurchase) case .userCancelled: return .Canceled() case .pending: return .Pending() @unknown default: return .Error( message: "Purchase result doesn't match with anything. This must not be executed") } } catch { return .Error(message: error.localizedDescription) }
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83
Sep ’25
App Store Server Notification implementation in multiple environments
Hey everyone, We're looking for the best way to handle App Store Server Notifications in our development setup and would appreciate some guidance. Our Setup: We use a single App Store Connect account for development, which supports multiple environments (e.g., staging1, staging2). Our production app lives in a separate account, so that's not an issue. The Challenge: We have only one configurable sandbox notification URL. This makes it difficult to route notifications to the correct development server (staging1 vs. staging2 vs developments) when a sandbox event occurs. We're considering using a proxy server to catch all notifications and then forward them to the appropriate environment. However, we're not sure how to determine the correct destination. Our Questions: What's the recommended approach for managing a single sandbox notification URL across multiple development environments? If a proxy is the best method, which parameter in the responseBodyV2 payload should we use to route the notification? How can we differentiate between our various dev environments? Is it possible to add custom properties to the App Store Server Notification V2 body to facilitate routing? Any advice or best practices you've implemented would be greatly appreciated.
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108
Jul ’25
Screen Rocorder plus Front Camera
I want to build an app for ios using react native. preferably expo. The app will be for recording user experiences with technology. the SLUDGE that they face while navigating through technology. I want to have basic login, signup. The main feature would be to have 2 recording modes. First is record the screen and the front camera simultaneously. Second is to record the back camera and the front camera simultaneously. I can then patch the two outputs later on that is the screen recording and the front camera clip in post processing. I want to know if this is possible as I was told that react native and expo does not have the support yet. if not is there any library or another approach to make this app come alive.
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96
Aug ’25
IAP Can not Use Sand Box Test
I am currently using StoreKit2 to set up the in-app purchase subscription flow, and I have already configured the subscription products in App Connect. I created a StoreKit Configuration file in Xcode and used it in the scheme. However, after completing the purchase, the transaction.jsonRepresentation data returns a transactionId of 0. After checking the documentation, I found that I need to disable the StoreKit Configuration and enable Sandbox Testing. But after disabling the StoreKit Configuration, I can't retrieve the real product data using Product.products(for: productIds). I can confirm that the ProductId I provided is real and matches the data configured in App Connect. Could you please help me identify the issue?
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179
Feb ’25
SKAN / AdAttributionKit Development Postback Not Triggering
We’re testing SKAN postbacks via AdAttributionKit but aren’t receiving any requests on our server even after generating development impressions and triggering a postback. Setup: Domain: https://linkrunner-skan.com Configured in Info.plist as: <key>NSAdvertisingAttributionReportEndpoint</key> <string>https://linkrunner-skan.com</string> <key>AttributionCopyEndpoint</key> <string>https://linkrunner-skan.com</string> Apple automatically appends the .well-known paths: /.well-known/private-click-measurement/report-attribution/ /.well-known/skadnetwork/report-attribution/ ATS diagnostics for the domain: PASS for all tests (TLS 1.0–1.3, PFS disabled, arbitrary loads allowed, etc.) Both .well-known paths are publicly accessible and return 200 OK Testing Flow: Enabled Developer → AdAttributionKit Developer Mode on iOS (15+) Followed Apple’s official guide: Testing AdAttributionKit with Developer Mode Generated test impression using: createAdAttributionKitDevelopmentImpression implemented in SKANManager.swift Called Postback.updateConversionValue with lockPostback: true Created Development Postback from Developer Settings Waited 30+ minutes while intercepting server requests (proxy + backend logs) What We’ve Tried So Far: Confirmed ATS compliance with nscurl --ats-diagnostics (all PASS) Verified .well-known paths are accessible publicly without redirects Tested endpoints manually with a POST request – server responds 200 OK Confirmed Info.plist entries exactly match Apple’s required keys Double-checked iOS device is running iOS 15+ with Developer Mode enabled Repeated test flow multiple times with fresh impressions and postbacks Waited up to 1 hour for postback (in case of delays) Issue: No POST requests are being received from Apple to either .well-known endpoint, even though the setup appears correct and ATS tests pass. References Used: Configuring an Advertised App Generating JWS Impressions Question: Has anyone faced a similar issue where AdAttributionKit Development Postbacks are not firing despite correct Info.plist setup, ATS compliance, and reachable .well-known endpoints? Any insight into possible missing configuration steps or testing nuances would be greatly appreciated.
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72
Aug ’25
Operation of Server Notifications V2 when Apple account is withdrawal
Please allow me to confirm the Server Notifications V2 specification. I am aware that if withdrawal an Apple account that has a subscription, the subscription will eventually be cancelled. Regarding Server Notifications V2 notifications with a notificationType of EXPIRED, am I correct in thinking that they will be sent when the subscription expires even if the Apple account is withdrawal?
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307
Feb ’25
StoreKit 2 subscription: “Continue to Purchase” does nothing in App Review, works in TestFlight
Hi, I’ve been struggling for a while with an issue around an auto-renewable subscription using StoreKit 2 and I’d like to double-check here whether I’m missing something, or if anyone has seen similar behavior. Context • iOS / iPadOS app, first release • 1 auto-renewable subscription (only product in the app) • Using StoreKit 2 only (Product, Transaction, AppStore) • Review device according to the message: iPad Air 11” (M3), iPadOS 26.2 • I keep failing on Guideline 2.1 – App Completeness • The App Review message is always the same: “The In-App Purchase products in the app exhibited one or more bugs which create a poor user experience. Specifically, no action occurred when we tapped on the Continue to Purchase button.” In App Store Connect, the subscription is properly configured, is in the state Ready for Review, and is correctly associated with this app version. What I see (locally + TestFlight) In TestFlight and local builds, the behavior looks correct: • Product.products(for: […]) returns the product, the price and currency are displayed correctly on the paywall / subscription card. • The user taps “Get PRO” → my overlay is shown (“Preparing purchase…” → then a screen with confirmation and price). • After tapping the “Continue to Purchase” button in that overlay, I call await product.purchase(). • On my devices, the system StoreKit purchase sheet always appears. • In the sandbox logs I can see: • a successful result from purchase() • a verified transaction via VerificationResult • the “user has PRO” flag being set correctly after refreshing entitlements (Transaction.currentEntitlements + fallback Transaction.latest(for:)). I’ve tested this on multiple real devices and with several sandbox Apple IDs – I cannot reproduce the “nothing happens after tapping” problem. What App Review reports App Review repeatedly claims that “no action occurred when we tapped on the Continue to Purchase button.” From their screenshots and description, the flow is: 1. They open Settings → subscription card. 2. They see the loaded price, so the product has clearly been fetched successfully from the App Store. 3. They tap my “Get SalonFlow PRO” button. 4. My overlay appears with the subscription name and price. 5. They tap “Continue to Purchase” (in my UI this is “Pokračovat k nákupu”). 6. According to them, nothing happens – no system StoreKit confirmation, no error message, no visible action. Important: this overlay did not appear as an extra complication, but as a reaction to their earlier feedback: • Originally, I had a simple flow: button in the card → directly calling purchase(). • App Review at that time said that after tapping the button “nothing happens”. • I added the overlay specifically to make it obvious that the button does react and that the app is preparing the system purchase: I show the product, the price, and a text explaining that a system App Store confirmation will appear next. • Only from that overlay do I call purchase(). So: in their environment they obviously do reach the overlay (meaning the button definitely does “something”), but the actual StoreKit purchase sheet never shows up. Additional changes and “safety belts” From the App Review video it was clear they were tapping the purchase button roughly 3 seconds after launching the app. So I tightened the flow even more: • The “Get SalonFlow PRO” button is now: • disabled until the product has been loaded from the App Store, • visually dimmed, with a spinner and a short text like “Loading subscription information, please wait…”. • The button only becomes active once the product is actually loaded and ready. • After that, the user goes through a two-step process: 1. tap “Get SalonFlow PRO” → overlay with details, 2. tap “Continue to Purchase” → this is where I call purchase(). On my devices, after that step the system purchase confirmation always appears. But App Review still says that after tapping “Continue to Purchase” nothing happens. What I’d like to ask 1. Has anyone seen a situation where Product.purchase() with StoreKit 2 works fine in TestFlight and sandbox testing, but in the App Review environment the system purchase sheet never appears (no error, just “nothing”)? 2. Are there any known edge cases on iPad (iPadOS 26.2, iPad Air M3) where the StoreKit purchase sheet might fail to show even if: • AppStore.canMakePayments == true, • the product is valid and loaded, • and no error is thrown from purchase()? 3. Could App Review consider my two-step flow (button → overlay → confirm button calling purchase()) problematic in itself, even though the overlay is there precisely because of their initial complaint that “nothing happens” after tapping the button? 4. Is there anything concrete you’d recommend: • adding to the logs, • changing in the timing/order of the purchase() call, • or adjusting in the UI, to make it absolutely clear what is happening in their environment if the system sheet never appears? From my point of view, the implementation follows the StoreKit 2 documentation, everything works correctly in real tests and TestFlight, but the App Review environment behaves differently and I keep getting stuck on Guideline 2.1. I’d really appreciate any experience, tips (“we had exactly this and fixed it by X”), or even a recommendation to radically simplify the flow back to a minimal “button → directly purchase()” without any intermediate overlay. Thanks a lot for any help – this review loop has been going on for weeks and I’d really like to finally resolve it.
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"This in-app purchase has already been bought" Error and SSL Failure on Restore
There is a project that has been running online for years. A few months ago, a player reported that after making their first successful IAP at a specific purchase point, any subsequent attempts to purchase the same item do not trigger the payment window. Instead, they get the error:"This in-app purchase has already been bought".​After contacting Apple Support once, the player was able to make a payment, but the issue reappeared on the next attempt. So far, this is the only user reporting the problem, other people can purchase normally. Question1:​ Here’s what I’ve tried: I reviewed the code and ensured that TransactionObserveris correctly called. I’ve also added **[[SKPaymentQueue defaultQueue] finishTransaction:transaction]**in all possible places, but the issue persists. According to the logs, after the user’s first purchase, every subsequent IAP attempt returns the same receipt from the initial successful transaction, even though I’m certain finishTransactionis being called. It seems like this method isn’t having the intended effect. Question2:​ I asked the player to manually trigger the Restore Purchases​ button by calling [[SKPaymentQueue defaultQueue] restoreCompletedTransactions]. the restoreCompletedTransactionsFailedWithErrorcallback returned the following error: Error Domain=NSURLErrorDomain Code=-1200 "An SSL error has occurred and a secure connection to the server cannot be made." The player has already checked their device time and tried switching between Wi-Fi and 4G, but the error remains. Is this SSL error related to the "already bought" error?​ Note that this SSL issue occurred during a separate restore process, not during a purchase attempt. Question: 3:​ I noticed that I’m not calling finishTransaction​ inside the restoreCompletedTransactionsFailedWithErrorcallback. Should I add it there?​ Purchase Logs: ​The player clicked "Restore Purchases" and then attempted another purchase. The purchase flow appears normal, but the IAP returns an old, already-used receipt. [2025-12-10 17:41:38:995] Restore transaction failed: Error > Domain=NSURLErrorDomain Code=-1200 "An SSL error has occurred and a > secure connection to the server cannot be made." [2025-12-10 17:41:40:010] Restore transaction failed: Error > Domain=NSURLErrorDomain Code=-1200 "An SSL error has occurred and a > secure connection to the server cannot be made." [2025-12-10 17:41:42:011] buy method called... productID: > huoxiancj_648 orderID: 22674511 [2025-12-10 17:41:42:107] ----Log Observers ID---- [2025-12-10 17:41:42:108] ObserverID: 0x109968890 [2025-12-10 17:41:42:108] Processing unfinished transactions... [2025-12-10 17:41:42:108] Finished processing unfinished > transactions. [2025-12-10 17:41:42:108] Allowing in-app purchase... [2025-12-10 17:41:42:215] Requesting product info... [2025-12-10 17:41:42:989] productsRequest didReceiveResponse: [2025-12-10 17:41:43:066] Invalid Product ID: ( [2025-12-10 17:41:43:066] Purchase quantity: 1 [2025-12-10 17:41:43:066] Product info: [2025-12-10 17:41:43:067] Price: 648 [2025-12-10 17:41:43:067] Product ID: huoxiancj_648 [2025-12-10 17:41:43:067] Validating product info... [2025-12-10 17:41:43:067] Sending payment request... [2025-12-10 17:41:43:067] requestDidFinish [2025-12-10 17:41:43:132] paymentQueue updatedTransactions. [2025-12-10 17:41:43:133] updatedTransactions case > SKPaymentTransactionStatePurchasing [2025-12-10 17:41:43:208] [payment.applicationUsername] > userid=50306496 appid=1045 instid=12844 reserve=xxxx > productID=22674511 [2025-12-10 17:43:16:008] paymentQueue updatedTransactions. [2025-12-10 17:43:16:008] updatedTransactions case > SKPaymentTransactionStatePurchased [2025-12-10 17:43:16:008] productIdentifier= huoxiancj_648 [2025-12-10 17:43:16:113] Sending receipt to server for validation. [2025-12-10 17:43:16:113] Transaction completed. Any help or suggestions would be greatly appreciated! Thanks in advance.
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71
Dec ’25
AppTransactionId support in Get Transaction Info endpoint — documentation change and actual behavior?
Hello, I have a question regarding the App Store Server API's getTransactionInfo endpoint. Previously, the official documentation for getTransactionInfo mentioned that: “This endpoint doesn’t support an app transaction. To get information about an app transaction, decode the signed app transaction received from the device.” However, as of June 2025, I can no longer find this sentence in the current documentation (link). Now, the docs state that all in-app purchase transaction IDs are supported (consumable, non-consumable, auto-renewable subscriptions, etc.). But in practice, when I call getTransactionInfo with an AppTransactionId (extracted from a signed App Transaction JWS), I receive this error: apiErrorCode: 4000048 “Invalid request. App transactions aren’t supported by this endpoint.” Is this endpoint supposed to support AppTransactionId now, or is the restriction still in place (but not mentioned in the docs)? Is there any official statement about when this restriction was added/removed? Can you clarify if only in-app purchase transaction IDs (and not AppTransactionIds) are supported for this endpoint, or has the policy changed recently? Any clarification or historical context would be greatly appreciated. Additionally, I would like to know about the behavior of an App Transaction in the event of a refund. If a user receives a refund for the app itself (not an in-app purchase), how can changes to the AppTransaction be detected? Does the App Store Server Notification v2 provide notifications for app-level refunds, or are such events only visible by decoding the latest App Transaction JWS on the device? Is there any way to receive app-level refund information server-side, or must we always rely on the device to provide the updated signed app transaction? Any clarification on this refund flow and notification coverage would also be appreciated. Thank you!
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158
Jun ’25
An unrecognised subscription
Hello, I have a problem with a subscription: it is not recognised by my application (under TestFlight); it is as if it did not exist. I have two subscriptions in the same group, a premium subscription that works perfectly and a basic subscription that is not recognised. I have checked everything at least twenty times. Its status is ‘Ready to submit’. I asked GPT 5.1 and Claude AI, but clearly both of their AIs are out of date and are giving me an obsolete procedure with App Store Connect options that don't exist.
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62
Dec ’25
Subscription IAP - SubscriptionStoreView results and errors - more info needed. FB19376771
FB19376771 Transactions monitoring. If I only have subscriptions, do I really need to "bother" with any sort of monitorTransactions() or just rely on subscription status (subscribed, revoked, cancelled ...) ? This is in line with Apple SKDemo and recommendation: // Only handle consumables and non consumables here. Check the subscription status each time // before unlocking a premium subscription feature. switch transaction.productType { ref: [https://developer.apple.com/documentation/storekit/implementing-a-store-in-your-app-using-the-storekit-api) The "Only handle consumables and non consumables here" recommendation by Apple in ref to the process transaction code above is nuanced and confusing if we know what was with other external experts recommendation saying when using only SK2 Views : "This is where most developers trip up in trying to get an experience that App Review is happy" ... continuing : "Be careful: that Purchase View code alone isn’t enough, because one of the possible completion status is .pending: the purchase is in the process of happening but hasn’t completed yet, so you still need to watch the transaction queue manually to be absolutely sure of handling the process completely." Does this holds true for the new SubscriptionStoreView ? We are not sure with quite obscure Apple documentation what SubscriptionStoreView handles, other than purchase (and now subscribe) function, and we do not know what diverse type of error handling messages it can return. Moreover, Apple documents: "Only handle consumables and non consumables here" ? @Apple can you please share more insights on Purchase button on SubscriptionStoreView e.g A) does it close ( finish). the purchase transaction ? B) What error results can it return ? C) What .onInAppPurchaseCompletion can handle as result ?
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74
Aug ’25
Biometric Authentication Behavior in IAP Sandbox Environment
Where the problem occurs: In-app purchase Non-ApplePay Non-local authentication login Environment where the problem occurs: Sandbox environment (Development environment, TestFlight environment) Problem handling process: Open page A in the app and purchase product B (auto-renewable subscription) on that page. User authentication is required to purchase product B. During the authentication process, the user needs to enter the Apple account and Apple account password. After completing the authentication, complete the purchase of product B. Problem in step 3: Why is FaceID or TouchID not used for authentication? Note: Face ID and Password -> iTunes Store and App Store -> Status is Enabled
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144
Jun ’25
Not receiving App Store Server Notifications for failed transactions
We are currently integrating In-App Purchases for our app and have configured App Store Server Notifications (v2) in the Sandbox environment. During testing, we observed the following issue: When a transaction is cancelled, declined, or pending (e.g., Ask to Buy flows or authorization pending), No App Store Server Notification is sent to our webhook endpoint. We only receive webhook events where the status is "purchased". This becomes a critical problem for us because our backend must accurately track transaction states including failed and pending purchases, especially for wallet top-up use cases. Additionally, we tried mocking failed transactions (via Xcode local environment and turning off In-App Purchases from Developer Settings) to simulate a technical failure scenario. Even in these cases, no webhook notification was received when the purchase failed server-side. Is it expected behavior in Sandbox that only successful transactions ("purchased") trigger webhooks? Are failed or pending transactions suppressed in Sandbox intentionally? Will webhook behavior be different in Production (i.e., will we receive webhook notifications for failures there)? Is there any extra configuration or entitlement needed to fully test failure scenarios via webhooks in Sandbox?
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87
Apr ’25
In app purchase related doubts
My app offers auto renewable subscriptions, I have couple of questions regarding how to model the subscriptions at server side, Is originalTransactionId will ever change for a subscription? Will it stay same in case of subscription upgrade/downgrade/crossgrade? If it changes on product change then how do i keep track that the subscription was a continuous subscription and not a new one? Is the webhook payload contains any identifier of which apple account purchase the subscription? I am having issues maintaining sync between the app account's current subscription and the local apple account's subscription, is there any doc regarding this? Will be really helpful
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56
Nov ’25
Migrating to StoreKit 2
Hi Friends, I have an iOS app, which uses around 500 in app purchases for various modules. I am using StoreKit for in app purchase, now trying to migrate this to StoreKit 2. I am using Product.products(for:) method to fetch all the products by sending identifiers of all the 500 In app purchases. In response, I am getting details of only 160 products, the method is not returning remaining in app purchases. What could be the reason for this behaviour, how to get rid of the issue? May be is this the issue will happen only on TestFlight? If someone from Apple assures about it, we have plan to submit the app. Please advise, Thank you.
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101
May ’25
Is the following subscription cancellation flow possible for an iOS in-app subscription?
Is the following subscription cancellation flow possible for an iOS in-app subscription? (Note: This is during the feature planning stage, not actual app deployment.) Planned user flow: User taps the “Cancel Subscription” button Display a “Wait a moment!” screen showing how much the user has enjoyed BFLIX content (to encourage retention) User taps “Proceed to Cancel” Collect cancellation reason from the user Redirect the user to the Apple subscription management page to complete cancellation Can this flow be implemented under Apple’s current in-app purchase and App Store Review guidelines?
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29
Nov ’25