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

StoreKit Documentation

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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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95
Jul ’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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86
Apr ’25
AppDistributor.current never returning
I try to access the AppDistributor.current (using try await) and the property never seem to return nor throw. The code I'm using looks like this: do { print("accessing current") let current = try await AppDistributor.current print("current obtained") switch(current) { case .appStore: return "AppStore" default: return "Unknown" } } catch { return "Exception: \(error)" } But the log only shows the accessing current and never the current obtained. Trying to step in the property starts with some assembly, but at some point, the debugger just never returned. I join a full Swift file of a sample test I'm using: SwiftMarketplaceTests.swift
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145
Jun ’25
Is it possible to generate a new receipt for the same transaction on device?
Hi, all! I am wondering about something about App Receipts. I'm using App Receipt hash to key some information server-side. I'm curious however, if that doesn't actually have a possible flaw. Is it possible to get a new receipt that would yield a different hash for the same transaction? Reinstalling the app, perhaps? Installing the app on a new phone? Basically, I want to make sure this hash is something I can rely on. If the user can get a new hash for the same purchase, that's obviously problematic. Thanks!
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349
Feb ’25
'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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90
Jul ’25
Unable to sign in to Sandbox Apple Account on Simulator
I am unable to sign in to a Sandbox Apple Account, where this issue occurs only via Simulator. Under Settings > Developer, I tap "Sign In" under Sandbox Apple Account. I enter my account credentials, and after bringing me back to the Developer page, the Sign In button briefly appears as disabled, before being re-enabled, without signing in to the account. (The account credentials are also recognized as correct, as I will receive an alert popup if incorrect.) See screenshots below: After signing in, Sign In button appears disabled... ... then is re-enabled without actually signing in to the account. I have now tried setting up multiple sandbox accounts via App Store Connect with various permutations (no confirmation of Apple Account email, confirming Apple Account email, logging in to iCloud and accepting terms of service), running different device simulators, running simulators on different Mac computers... none of which yield a different result. By contrast, I can sign in to the Sandbox Apple Account without issue on a physical device. The problem occurs only via Simulator.
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163
Apr ’25
Reporting your App Store Server Notifications issue
To receive server notifications from the App Store, follow the instructions in Enabling App Store Server Notifications. If your server doesn’t receive any notifications, check your server logs for any incoming web request issues, and confirm that your server supports the Transport Layer Security (TLS) 1.2 protocol or later. If you implement version 2 of App Store Server Notifications, call the Get Notification History endpoint. If there is an issue sending a notification, the endpoint returns the error the App Store received from your server. If your issue persists, submit a Feedback Assistant report with the following information: The bundleId or appAppleId of your app The date and time your issue occurred The raw HTTP body of your notification The affected transactionId(s) if applicable The version of App Store Server Notifications (i.e., Version 1 or Version 2) The environment (i.e., Production or Sandbox) To submit the report, perform these steps: Log into Feedback Assistant. Click on the Compose icon to create a new report. Select the Developer Tools & Resources topic. In the sheet that appears: Enter a title for your report. Select “App Store Server Notifications” from the “Which area are you seeing an issue with?” pop-up menu. Select “Incorrect/Unexpected Behavior” from the “What type of feedback are you reporting?” pop-up menu. Enter a description of your issue. Add the information gathered above to the sheet. Submit your report. After filing your report, please respond in your existing Developer Forums post with the Feedback Assistant ID. Use your Feedback Assistant ID to check for updates or resolutions. For more information, see Understanding feedback status.
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618
Feb ’25
Urgent: Reports of Duplicate Charges via AlipayHK on Apple Pay
We’ve recently observed an escalating number of complaints from AlipayHK users regarding duplicate charges when completing transactions via Apple Pay. While no similar issues have been reported by users of other credit card providers integrated with Apple Pay, the problem appears isolated to AlipayHK transactions. Key Details: Multiple users confirm being charged twice for single transactions. Complaints are increasing in frequency, indicating a potential systemic issue. No overlapping reports from non-AlipayHK payment methods at this time. To safeguard customer trust and ensure seamless payment experiences, we kindly request Apple’s support in: Investigating whether the root cause stems from Apple Pay’s transaction handling. Collaborating with AlipayHK (if necessary) to resolve the issue promptly. Providing guidance on interim measures to prevent further duplicate charges. Could Apple confirm if this is a known issue and share a timeline for resolution? We’re eager to assist in any way possible to mitigate impact on users. Thank you for your urgent attention to this matter.
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May ’25
My Subscription Screen
Hey everyone, This might be a simple fix that I’m just overlooking, but I’ve been stuck on it for the past 48 hours. The issue is on my subscription screen — after a user completes a successful in-app purchase, the app doesn’t navigate to the main app like it’s supposed to. I’ve added logs, tried various fixes, and even asked AI for help, but nothing has worked. From what I can tell, it seems like my listeners aren’t being registered properly after the transaction. I’ve tried reinitializing them, moving them around, and testing different flows, but still no luck. If anyone has insight into how they’ve set this up or any suggestions I might not have considered, I’d really appreciate it. Thanks in advance!
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63
Aug ’25
Reporting to External Purchase Server API when using alternative PSP in the EU
Dear community, Context My company operates in the European Union, where not so long ago there appeared the possibility to accept an ["Alternative Terms Addendum for Apps in the EU"] (https://developer.apple.com/contact/request/download/alternate_eu_terms_addendum.pdf), which, among others, gives us the possibility to use an alternative payment provider, other than Apple's In App Purchase PSP system (ref: Apple docs). My company did accept it and was granted the StoreKit External Purchase Entitlement (com.apple.developer.storekit.external-purchase) entitlement, with which we integrated a different PSP, so now we want to incorporate the reporting to Apple's External Purchase Server API. We are currently integrating with the External Purchase Server API and have encountered a couple of issues I would appreciate clarification on: Question 1 Is there a way to retrieve an overview or summary of the current subscription states on Apple’s servers as a result of the submitted reports to External Purchase Server API? Specifically, I would like to verify the expected outcomes before the monthly invoice is issued by Apple and to understand the subscription states for the test users I used during this process and for future reference as well. Question 2 In one scenario, I initiated a one-year subscription, and in the middle of its period, I submitted a RENEWAL for one month with a higher price. I expected the request to fail due to overlapping periods and/or pricing conflicts, but both submissions were accepted without error. Do you have an idea about: What happens at the end of the renewed month? Will the subscription continue with the renewed (higher) amount, revert to the original (lower) annual rate, or be canceled? Where can I view the final state and billing plan for that subscription? Thank you for your assistance, we are looking forward for any kind of help or information regarding this topic.
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107
Apr ’25
All transaction in my current entitlement returns as .unverified
Im building a small iphone app with StoreKit and currently testing it in testflight right on my mac, not on iphone. StoreKit part almost exactly copied from SKDemo from one of the Apple's WWDC. For some users and for myself Transaction.currentEntitlements always returns .unverified results. I double-checked Apple Connect settings, i checked my internet connection and everything is fine. Is there some pitfalls for testflight on mac? How can I find out what is causing this problem?
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544
May ’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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72
Apr ’25
iOS promotional code eligibility
I am implementing promotional codes for auto-renewing subscriptions in my app. I need to create the codes and have them link to a discounted auto-renewing subscription. So my normal 1 month subscription is $24.99, I would like to offer users (new subscribers and existing/expired subscribers) the ability to enter a promo code that discounts the price of the first month to $4.99, then $24.99 after the initial first month. All users, regardless of whether or not they have has a previous subscription or not should be able to use this code for this discount. From what I am seeing in documentation, promo codes are only available to users that have had a subscription previously? Currently I am receiving the response "Offer Not Available" with the error: <SKPaymentQueue: 0x2815f0d60>: Payment completed with error: Error Domain=ASDServerErrorDomain Code=3904 "Offer Not Available" UserInfo={NSLocalizedDescription=Offer Not Available I simply do NOT understand why apple engineers have to make something that should be somewhat straightforward, be SO COMPLEX, then when you try to figure out whats going wrong, no meaningful error to troubleshoot. WTF I have tried this on users that have had a previous subscription and still the same error.
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513
Jan ’25
Is there an API provided by the App Store Server API for canceling subscriptions?
Is there an App Store Server API available that allows cancellation of specific subscriptions by specifying transaction_id or similar identifiers? Background of these questions: We occasionally suspend user accounts due to violations of our service terms and conditions. In such cases, we would like to forcibly cancel their subscriptions if possible. However, we could not find relevant information in the documentation, which is why we are reaching out with these questions. Please let us know.
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84
Jul ’25
My iOS application cannot connect to the Sandbox environment.
I am testing the subscription flow in my iOS app. Initially, everything was working fine when following the official StoreKit and sandbox testing documentation. After a successful subscription, the “You’re all set” popup always displayed the environment as “sandbox.” However, after some changes, possibly upgrading macOS to the latest version, upgrading Xcode, or regenerating certificates, I can no longer connect to the sandbox testing environment. The subscription success popup now always shows the environment as “xcode.” By default, the iOS app should run in the sandbox on macOS, so I didn’t set the “Enable App Sandbox” option to “Yes” in the Xcode build settings. When I try enabling it, Xcode throws the following error: “Failed to verify code signature of /var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.n3J0tr/extracted/Payload/XXXX.app : 0xe8008015 (A valid provisioning profile for this executable was not found.) Please ensure that your app is signed by a valid provisioning profile.” Additionally, if “Enable App Sandbox” is set to “No,” the app installs successfully on a real device, but there is no prompt to trust an untrusted developer certificate, which usually appears for such certificates. I’m not sure if this information will be useful to others, but I’ve been stuck on this issue for a while, and it’s preventing me from moving forward with my work. Any help to resolve this would be greatly appreciated. Thank you!
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328
Feb ’25
IAP StoreKit2 Can Not Fectch Products
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? Thank you
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290
Mar ’25
Strange Pattern of Subscriptions + Refunds — Possible Abuse?
Hi everyone, I'm an indie developer and recently noticed some odd behavior in my app's subscription metrics. There’s been a sudden spike in annual subscriptions, which is very unusual for my app — historically, users rarely choose that option. What’s more concerning is that these subscriptions are almost immediately canceled and refunded. Upon checking analytics (RevenueCat + App Store Connect), I also noticed inconsistencies in user location data: users appear to be from one region (like Singapore), but deeper tracking shows actual usage from Vietnam, a market I’ve never targeted and where I do no advertising. This behavior seems coordinated and is affecting my app’s refund rate, which I worry could raise red flags on the App Store side. Has anyone experienced anything similar? Is there a recommended way to report suspicious subscription/refund activity to Apple or prevent potential abuse like this? Any advice would be really appreciated. Thanks!
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73
Jun ’25
Verify Receipt is not found - After successful payment for Annual subscription.
The application is developed with Xamarin Framework and it is live now. The customer installed the app and purchased the annual subscription. And for some reason, they uninstall and reinstall the application on the same device. Now user wants to restore the subscription. In the application, there is an option to Restore the subscription. But restore API not return purchase details. But when clicking the subscription button instead of restoring the subscription, it says you subscribed to this plan". is there any possibility of not getting VerifyRecipt even after a successful purchase?
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297
Feb ’25