Overview

Hi all - figured I would kick off with a CloudKit question. Recently in development of a multi-device app I got into a state where all iOS devices could not write to the (production) CloudKit container - however macOS could still write (multi-device SwiftUI code). After ruling out a lot of other things it seemed like there had been some corruption in the production zone's PCS key chain. The only fix was deleting the zone from the CloudKit Console (safe for my pre-release beta data, but destructive). Is there a safer or developer-accessible recovery path for PCS chain corruption? Is this situation detectable earlier, or is there guidance on avoiding it during pre-release testing? The error in the logs in this scenario had "overallStatus":"USER_ERROR", "error":"BAD_REQUEST", "returnedRecordTypes":"_pcs_data".

When a host app hasn't implemented ATT at all — which is still common in enterprise apps — what's the expected behavior for third-party SDKs that rely on tracking authorization? Should the SDK default to notDetermined handling indefinitely, or is there a recommended fallback experience?

When subscribing to NSPersistentCloudKitContainer.eventChangedNotification events, quota exceeded events aren't delivered to the app at runtime. I get CKError.partialFailure, but without any additional information in any of the properties. https://developer.apple.com/documentation/cloudkit/ckerror/code/partialfailure states information should be available, but it isn't. When a debugger is attached, the information is logged by another process, but my app cannot access that at runtime to provide users with additional information. Is there any workaround to get this to work? References: Older post: https://forums.developer.apple.com/forums/thread/696523 FB13773922

For a sleep app running 8–12 hours in background, is AVAudioSourceNode with a real-time render block more power-efficient than looping a pre-encoded audio file via AVAudioPlayerNode? I want to migrate from files to procedural synthesis but not at the cost of battery. What does Instruments / Energy Log show as the typical CPU overhead difference, and is there Apple guidance on this trade-off?

Hi everyone, Since today, all my Codex requests have been failing in both Xcode 26.5 and Xcode 27 beta. The Codex integration appears to be connected and authenticated correctly, but every request fails immediately with the error shown in the attached screenshot. Error message: The data couldn’t be read because it isn’t in the correct format.

I can’t complete assistant setup up in Reality Composer Pro 3 beta. I filled in the set up fields for OpenAI and clicked done. However, when I click connect nothing happens.

For a third-party ads SDK embedded in host apps: the ATT authorization status is determined at the app level, but our SDK initializes before the host app necessarily calls ATTrackingManager.requestTrackingAuthorization(). What's Apple's recommended pattern for: SDK initialization that's ATT-status-agnostic at launch Receiving a callback or notification when ATT status changes post-initialization, without polling Is there a system notification or delegate pattern for ATT status changes that SDKs should be using in iOS 27? — Divya Ravi, Senior iOS Engineer

Hello, We are contacting you regarding an issue we are currently experiencing during the App Review process related to In-App Purchases and StoreKit product retrieval. After extensive internal testing and investigation, we believe the behavior we are seeing is identical to the issue discussed in the following Apple Developer Forum thread: https://developer.apple.com/forums/thread/827016 Our application was rejected under Guideline 2.1 - Performance because the subscription plans reportedly failed to load during review. According to the review notes, the In-App Purchase product list appeared empty in the review environment, which prevented the paywall from loading correctly. We would like to provide additional technical context because, despite significant testing efforts on our side, we have been unable to reproduce this behavior outside of the App Review environment. The exact same binary that was reviewed by App Review has been thoroughly tested by us through TestFlight on multiple physical devices, including iPhone and iPad devices, using multiple Sandbox tester accounts and different network conditions. In all of our tests, the subscription system functions correctly and consistently. Specifically, we verified that: StoreKit successfully retrieves all configured subscription products RevenueCat offerings load correctly without timeout or empty states Localized pricing information is displayed properly Subscription packages appear correctly in the paywall UI Purchase flows complete successfully Restore purchases functionality works correctly Products are returned both on cold launch and repeated application launches The issue does not occur intermittently in TestFlight or Sandbox testing on our side We also carefully reviewed our App Store Connect configuration and verified the following items multiple times: All In-App Purchase subscriptions are attached to the submitted app version Product identifiers used in the application code exactly match the identifiers configured in App Store Connect All products are marked as “Cleared for Sale” Paid Applications Agreement has been accepted and remains active Tax and banking information are complete and active Subscription localization settings are configured properly Pricing information is active and visible The products are available in the storefronts being tested The submitted binary is identical to the binary tested successfully through TestFlight Additionally, we implemented defensive handling in the application to minimize the impact of temporary StoreKit failures. The application now includes: Retry logic for offerings retrieval Graceful fallback handling for empty offerings Protection against infinite loading states Additional RevenueCat and StoreKit logging UI fallbacks when products temporarily fail to load Despite these safeguards, the review feedback still indicates that the products are not being returned in the App Review environment. At this point, because the issue cannot be reproduced externally and only appears during App Review, we suspect there may be an intermittent or environment-specific issue affecting StoreKit product retrieval in the review sandbox environment. One important detail is that the exact same build consistently works in TestFlight immediately before and after submission. This makes the behavior particularly difficult for us to diagnose because there appears to be no configuration difference between our successful tests and the App Review scenario. We also understand from Apple documentation and previous App Review communication that In-App Purchases are tested within an Apple-provided sandbox environment. Based on the evidence currently available to us, the failure appears to occur specifically within that review sandbox process rather than within the application logic itself. If possible, we would greatly appreciate assistance with the following: Verifying whether StoreKit product retrieval is functioning correctly in the App Review sandbox environment Confirming whether the review device successfully established communication with App Store sandbox services Providing any available diagnostic logs related to the failed product request Confirming whether the product identifiers were visible to StoreKit during review Sharing any guidance on how we may reproduce the App Review behavior locally Clarifying whether there are known intermittent issues affecting StoreKit product loading during App Review We are fully committed to resolving the issue and ensuring complete compliance with App Store requirements. However, because the issue currently appears environment-specific and non-reproducible from our side, we are struggling to determine what additional changes are necessary. If there are any additional diagnostics, logging methods, StoreKit verification steps, or App Review recommendations you would like us to implement, we would be happy to do so immediately. Thank you very much for your assistance, support, and time. We sincerely appreciate your help in investigating this issue. Best regards, Mert Akgün

Subject: Inquiry Regarding Architectural Overhead and Buffer Access in the Push to Talk Framework for Real-Time Core ML Blind Source Separation Dear Apple Engineering Team, We are currently developing an Apple-native communication platform that utilizes the Push to Talk framework alongside Core ML to handle real-time, on-device audio processing. We are working to resolve the issue of single-channel, co-channel interference (overlapping voice streams) directly on the edge. Our current challenge lies in the pipeline latency and background lifecycle constraints when intercepting incoming audio buffers. To cleanly separate overlapping voices before they hit the audio output mixer, we need to process the raw PCM data immediately upon arrival. Could you please provide guidance on the following architectural questions: Low-Latency Buffer Interception: What is the recommended design pattern within the PTChannelManagerDelegate flow to pass raw incoming audio buffers directly to a Core ML model running on the Apple Neural Engine (ANE) before the system routes them to AVAudioEngine for playback? Background Thread Management: Given the strict background execution boundaries enforced by the Push to Talk framework, how can we best optimize thread scheduling to ensure our speech separation model completes its execution without triggering an OS background processing timeout or process termination? Dynamic UI Manifestation: Once a combined audio stream is separated into two clean, distinct voice vectors on-device, what is the best approach for registering multiple PTParticipant states simultaneously so that the native system UI (like the Dynamic Island) accurately reflects both speakers? Thank you for your time, insights, and continued support of developer innovation within the iOS and iPadOS ecosystems. Best regards, Ken Zakreski Founder, Marine Link Pro

Safari, Freeform and some other apps now support curved windows. It this now available to developers as well? I couldn't find any information about it. Thanks!

I’m attempting to set up Gemini agentic support in Xcode 26.6 RC (and I'm assuming the process is the same in 27), but since I need to use Gemini with a corporate account, I have a Google Cloud Project ID, not an API key, so it seems like the configuration file route is the right path? After consulting Gemini and filling out the .env file and settings.json files, Xcode is complaining about needing to be authenticated, and I can’t seem to see how to trigger the auth, like one might do in Gemini CLI. I'd appreciate any suggestions or advice at this point. Thanks in advance!

Is it possible to link a HFBluetooth input device with the output iPhone speaker while Live Listen is active?

Is it possible to port a bluetooth microphone (BluetoothHFP) to MFi hearing aids connected to an iPhone. When I try to do that the BluetoothHFP grabs input and output. When I pull the output away (BluetoothA2DP) it gives up the input.

I haven’t been able to get this to work at any level! I’m running into multiple issues, any light shed on any of these would be nice: I can’t implement a bloom filter that produces the same output as can be found in the SimpleURLFilter sample project, after following the textual description of it that’s available in the documentation. No clue what my implementation is doing wrong, and because of the nature of hashing, there is no way to know. Specifically: The web is full of implementations of FNV-1a and MurmurHash3, and they all produce different hashes for the same input. Can we get the proper hashes for some sample strings, so we know which is the “correct” one? Similarly, different implementations use different encodings for the strings to hash. Which should we use here? The formulas for numberOfBits and numberOfHashes give Doubles and assign them to Ints. It seems we should do this conversing by rounding them, is this correct? Can we get a sample correct value for the combined hash, so we can verify our implementations against it? Or ignoring all of the above, can we have the actual code instead of a textual description of it? 😓 I managed to get Settings to register my first attempt at this extension in beta 1. Now, in beta 2, any other project (including the sample code) will redirect to Settings, show the Allow/Deny message box, I tap Allow, and then nothing happens. This must be a bug, right? Whenever I try to enable the only extension that Settings accepted (by setting its isEnabled to true), its status goes to .stopped and the error is, of course, .unknown. How do I debug this? While the extension is .stopped, ALL URL LOADS are blocked on the device. Is this to be expected? (shouldFailClosed is set to false) Is there any way to manually reload the bloom filter? My app ships blocklist updates with background push, so it would be wasteful to fetch the filter at a fixed interval. If so, can we opt out of the periodic fetch altogether? I initially believed the API to be near useless because I didn’t know of its “fuzzy matching” capabilities, which I’ve discovered by accident in a forum post. It’d be nice if those were documented somewhere! Thanks!!

Hi, I see that on WebViews we don't get the same interface for allowing the user to use a saved password or passkey as in Safari or on an Authentication View. Can the same be accomplished on a WebView?

Hello, I'm trying to present an app overlay (like an HUD) that should appear on top of everything (the app UI could be the root content view or a modal presented from the content view or a modal over a modal presented from the content view, etc.). If I use a ZStack for example, the issue is that the view is not visible if the ZStack is presenting a modal for example. In UIKit, I think we can use instantiate another UIWindow to show content above the top window of the app (what a native alert does if I'm not wrong). What would be the equivalent in SwiftUI? How could I create this? Thanks, Axel

Family.app keeps crashing whilst I am using Xcode 27 beta The app is very simple with just a small number of views. That's all I can say really This is the first part of the crash report output. Multiline Translated Report (Full Report Below) Process: Family [3026] Path: /Volumes/VOLUME/*/Family.app/Family Identifier: com.apple.family Version: 1.0 (1) Code Type: ARM-64 (Native) Role: Background Parent Process: launchd_sim [2846] Coalition: com.apple.CoreSimulator.SimDevice.5FAFAC9B-97A4-4FC8-ADF3-4A8C694BF68D [1639] Responsible Process: SimulatorTrampoline [1008] User ID: 501 Date/Time: 2026-06-09 20:14:55.5737 +0100 Launch Time: 2026-06-09 20:14:45.2448 +0100 Hardware Model: Mac16,12 OS Version: macOS 26.5.1 (25F80) Release Type: User BlockQuote

Can we please Have a Require Touch ID to unlock Certain App on Mac OS 27.

What are the performance implications of building an app that is effectively single-threaded (for example, heavily isolated to @MainActor) versus one that allows work to execute across multiple executors and threads?

Is it possible to wait for mobileassetd to finish downloading from both macOS and within an iOS Simulator. We create a VM but as we boot them up regularly for CI jobs, if the VM on creation hadn't finished downloading a bunch of things we see network activity. Just wondering if a way exists to inspect the state of mobileassetd so we can wait for it to finish downloading stuff before completing the VM image build.