Hi everyone, I’m building a sports performance app for Apple Watch that uses the onboard IMU to analyze swings and impacts in sports like tennis and golf. The goal is to estimate club/racket head speed, ball speed, and shot quality in real time from wrist motion data. With Core Motion, I can currently get deviceMotion updates at ~100 Hz. While this is fine for general movement tracking, the actual ball impact happens much faster — 5–10 ms in tennis and ~0.5 ms in golf. Many of the high-frequency vibration/impact components are missed at 100 Hz, making it hard to directly measure or more accurately estimate certain performance metrics. Questions for Apple / community: 1. Is there a way to access raw accelerometer and gyroscope data at higher sampling rates (e.g., 500–1000 Hz) on Apple Watch? 2. If not, is this due to hardware limitations or an API/software constraint? 3. Are there any research, partner, or beta programs that allow deeper sensor access for sports-science use cases? Even modest increases in IMU sampling could unlock more accurate ball-speed estimates, impact force analysis, and strike-quality detection without needing external sensors — making Apple Watch a best-in-class wearable for precision sports analytics. Happy to share more about the current approach, sample data, and potential use cases if helpful. Thanks, Max

Environment: macOS 15.2 (24C101) with Xcode 16.2 (16C5032a) Goal: I am trying to build a simple IMKInputController-based input method. Problem: My .app bundle registers successfully and I can select it as an input source. When selected, it blocks keyboard input, but my handle method does not seem to execute or produce output. I have placed NSLog statements in my controller's init and handle methods. Code for the controller: import InputMethodKit // The IMKTextInput protocol is provided by the framework. // We don't need to define our own bridging protocol for this test. public class HelloWorldController: IMKInputController { public override init!(server: IMKServer!, delegate: Any!, client inputClient: Any!) { super.init(server: server, delegate: delegate, client: inputClient) NSLog("HelloWorldIME: Controller has been initialized.") } public override func handle(_ event: NSEvent!, client sender: Any!) -> Bool { NSLog("HelloWorldIME: handle() method was called.") // ================== FINAL FIX APPLIED HERE ================== // 1. First, we ensure the client is a fundamental Objective-C object. guard let clientObject = sender as? NSObject else { NSLog("HelloWorldIME: Error - client object is not an NSObject.") return false } NSLog("HelloWorldIME: Successfully cast client to NSObject.") // 2. Now that we have an NSObject, we can safely check if it responds to the selector. let selector = #selector(IMKTextInput.insertText(_:replacementRange:)) if !clientObject.responds(to: selector) { NSLog("HelloWorldIME: Error - client object does not respond to the insertText selector.") return false } NSLog("HelloWorldIME: Client responds to insertText. Preparing to insert text.") // 3. Since we've confirmed it responds, we can now safely treat it as an IMKTextInput // and call the method. let client = clientObject as! IMKTextInput let stringToInsert = "A" let replacementRange = NSRange(location: NSNotFound, length: 0) client.insertText(stringToInsert, replacementRange: replacementRange) NSLog("HelloWorldIME: Called insertText with string '\(stringToInsert)'. Action complete.") // ======================================================== return true } }

I have a TVTopShelfContentProvider that implements func loadTopShelfContent() async -> (any TVTopShelfContent)? When running on Xcode 26 b5 I am seeing the following error in swift 6 mode. Non-Sendable type '(any TVTopShelfContent)?' cannot be returned from nonisolated override to caller of superclass instance method 'loadTopShelfContent()' I'm not sure exactly what's changed here as it used to compile just fine but it's unclear now how I can work-around this error or how the API is supposed to be used. The following definition is enough to trigger the error in Swift 6 language mode. import TVServices class ContentProvider: TVTopShelfContentProvider { override func loadTopShelfContent() async -> (any TVTopShelfContent)? { return nil } } I can "fix" it by adding @preconcurrency to the TVServices import but it seems like this API is unusable currently? Or maybe it's user error on my part?

Hello, I am trying to localize my app in other languages. Most of the text are automatically extracted by Xcode when creating a string catalog and running my app. However I realized few texts aren't extracted, hence I find a solution for most of them by adding For example I have some declared variable as var title: String = "Continue" Hence for them to be trigger I changed the String by LocalizedStringResource which gives var title: LocalizedStringResource = "Continue" But I still have an issue with some variables declared as an array with this for example @State private var genderOptions = ["Male", "Female", "Not Disclosed"] I tried many things however I don't success to make these arrays to be translated as the word here "Male", "Female" and "Not Disclosed". I have more array like that in my code and I am trying to find a solution for them to be extracted and be able to be localized Few things I tried that doesn't worked @State private var genderOptions : LocalizedStringResource = ["Male", "Female", "Not Disclosed"] @State private var genderOptions = [LocalizedStringResource("Male"), LocalizedStringResource("Female"), LocalizedStringResource("Not Disclosed")] Any idea more than welcome Thank guys

I'm currently experimenting with AlarmKit and, when configuring an alarm with a Relative schedule, but that never repeats, I find that it is still scheduled in the AlarmManager, but the documentation says that an alarm that has no repeat schedule will be removed from the AlarmManager after firing. This behavior is experienced both in my project and with the sample code AlarmKit-ScheduleAndAlert To reproduce, create a non-repeating alarm, and, after firing, it will still be on the list marked as Scheduled Am I doing something wrong or is this a bug?

Hello everyone, I think I've discovered a bug in JSONDecoder and I'd like to get a quick sanity-check on this, as well as hopefully some ideas to work around the issue. When attempting to decode a Decodable struct from JSON using JSONDecoder, the decoder throws an error when it encounters a dictionary that is keyed by an enum and somehow seems to think that the enum is an Array<Any>. Here's a minimal reproducible example: let jsonString = """ { "variations": { "plural": "tests", "singular": "test" } } """ struct Json: Codable { let variations: [VariationKind: String] } enum VariationKind: String, Codable, Hashable { case plural = "plural" case singular = "singular" } and then the actual decoding: let json = try JSONDecoder().decode( Json.self, from: jsonString.data(using: .utf8)! ) print(json) The expected result would of course be the following: Json( variations: [ VariationKind.plural: "tests", VariationKind.singular: "test" ] ) But the actual result is an error: Swift.DecodingError.typeMismatch( Swift.Array<Any>, Swift.DecodingError.Context( codingPath: [ CodingKeys(stringValue: "variations", intValue: nil) ], debugDescription: "Expected to decode Array<Any> but found a dictionary instead.", underlyingError: nil ) ) So basically, the JSONDecoder tries to decode Swift.Array<Any> but encounters a dictionary (duh), and I have no idea why this is happening. There are literally no arrays anywhere, neither in the actual JSON string, nor in any of the Codable structs. Curiously, if I change the dictionary from [VariationKind: String] to [String: String], everything works perfectly. So something about the enum seems to cause confusion in JSONDecoder. I've tried to fix this by implementing Decodable myself for VariationKind and using a singleValueContainer, but that causes exactly the same error. Am I crazy, or is that a bug?

In release mode, the values are missing. I don't know what's wrong with it. If I install the debug version first and then overwrite it with the release build, I can retrieve the values stored in debug mode. But if I uninstall completely and install the release version directly, it's empty

Since iOS 18.4 and macOS 15.4 updating the calendar of an (ek)event (to another accounts calendar) or detaching an repeating event throws an error while saving: "Access denied" EKEventStore.save(event, span: .thisEvent, commit: true) catch { "Access denied" }

Hi, We have a need to provide SIM verification. At present, accessing the phone number bound to the device is not programmatically accessible. Would Apple consider exposing this API via a user consent? Otherwise, what is the suggested approach to verify the SIM card is the correct phone number on an iOS device?

Hello, How do apps like App Lock implement app-opening from a shield? Is this supported for 3rd-party apps or limited to partners? https://apps.apple.com/us/app/app-lock/id6448239603

I'd like to allow users to select apps to shield from a DeviceActivityReport (similar to how Apple's Screen Time Settings activity report allows a user to "add limits" to a selected app in the report. What I need to do is pass an appToken from the DeviceActivityReportExtension to my app. I realize the extension is sandboxed and doesn't allow "private" data to be seen outside of the sandbox. The docs state: To protect the user’s privacy, your extension runs in a sandbox. This sandbox prevents your extension from making network requests or moving sensitive content outside the extension’s address space. However, tokens aren't "sensitive". I want to pass a token set out of the sandboxed extension so users can select certain apps from the report that my app can use for setting limits, etc. I thought using App Groups and saving data with UserDefaults with a suiteName for my app group would do it, but it doesn't appear to allow me to pass the token data. Yes I'm using the same KEY for both as I set a config enum to ensure it's the same and I can pass tokens successfully between other extensions/apps in the app group, but not the report extension. It seems the app and the extension have their own stores as the report extension can write to and read from a store but despite being the same suiteName, other apps in the app group don't get or send data to the Report Extension. I realize this is probably due to the design with the sandbox to protect user privacy, however it seems an exception should be made for passing tokens (or even better allow passing through another method like a callback, etc). Is there ay way to accomplish passing a token from the sandboxed report extension to my app?

We just dropped support for iOS 16 in our app and migrated to the new properties on Locale to extract the language code, region, and script. However, after doing this we are seeing an issue where the script property is returning a value when the language has no script. Here is the initializer that we are using to populate the values. The identifier is coming from the preferredLanguages property that is found on Locale. init?(identifier: String) { let locale = Locale(identifier: identifier) guard let languageCode = locale.language.languageCode?.identifier else { return nil } language = languageCode region = locale.region?.identifier script = locale.language.script?.identifier } Whenever I inspect locale.language I see all of the correct values. However, when I inspect locale.language.script directly it is always returning Latn as the value. If I inspect the deprecated locale.scriptCode property it will return nil as expected. Here is an example from the debugger for en-AU. I also see the same for other languages such as en-AE, pt-BR. Since the language components show the script as nil, then I would expect locale.language.script?.identifier to also return nil.

Hello, I’m presenting the familyActivityPicker from a presented sheet in my application. When I select some apps, categories or websites and tap “Done”, the familyActivityPicker is dismissed but the presenting sheet is also dismissed on iOS 18.4, iOS 18.5, iOS 26 beta 1 and 2. If I tap on “Cancel” from the familyActivityPicker, the sheet is also dismissed on iOS 18.4, iOS 18.5, iOS 26 beta 1 and 2. The same code works perfectly fine on iOS 18.0, iOS 18.1, iOS 18.2 and iOS 18.3. Is this a known-issue? If opened the feedback FB18369821 for this. Regards, Axel

All of my apps stopped working with WeatherKit this morning. They all return an "Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2" error. I am certain that the WeatherKit capability added (in project) and enabled as a Capability & App Service (on developer portal for the identifier). All other iCloud features of my apps are working as expected. I have also done all the normal troubleshooting using codesign / security cms, etc. to verify entitlements. I created the following simple project to verify the integration. import WeatherKit import CoreLocation struct ContentView: View { @State private var temp: Measurement<UnitTemperature>? = nil var body: some View { VStack { if let t = temp { Text("\(t.value.rounded())°\(t.unit.symbol)") } else { Text("Fetching…") .task { let service = WeatherService() do { let location = CLLocation(latitude: 50.318668, longitude: -114.917710) let weather = try await service.weather(for: location, including: .current) temp = weather.temperature } catch { print("Error:", error) } } } } } } Any ideas what may be happening?

Hi there, I'm presenting a FamilyActivityPicker inside of a sheet, and on some phones, the FamilyActivityPicker freezes and crashes when the user expands the "Other" category only. "Other" is the only category that exhibits this behavior, and it only does this on some phones, not in all cases. This issue is perfectly reproducible on those phones when using the FamilyActivityPicker for the "other" category only, but on those same phones it does not reproducible in the Native ScreenTime Picker in Settings → ScreenTime → App Limits → Add Limit. I don't have access to these phones as they are user reports, but any guidance here would be deeply appreciated. More broadly, there are several issues with the FamilyActivityPicker (categories expand on top of each other when multiple are opened, varying behavior with tapping rows vs tapping select bubbles depending on phone size, etc) that the Native ScreenTime Picker doesn't have. Grouping websites as a standalone category is preferable as well. Could we as developers just have access to that one?

The contacts app has fields for Phonetic and Pronunciation. My app adds phonetic data to the phonetic field to help Siri better understand contacts stored in Greek, Cyrillic, or Georgian. However, using the phonetic field causes the sorting order of contacts to be messed up. For example, Greek B (beta) is represented as a phonetic sound of V, resulting in a completely incorrect sorting order. The pronunciation field doesn’t seem to affect the sorting order, but I’m not sure what it does or should do. My questions are: Do we understand the difference between phonetic and pronunciation, and how Siri actively uses them? If the phonetic field is the correct one to use, how can we raise a feature request with Apple to add an option to sort contacts based on phonetic fields or not? Here’s a test you can try: Create a new contact with the following details: First name: test Last name: test Phonetic first name: Billy Phonetic last name: Idol Ask Siri to show the contact Billy Idol. It will return the “test test” contact. Switch from the phonetic to the pronunciation fields. Now, Siri won’t find Billy Idol.

Both view and modifier versions of the FamilyActivityPicker crash randomly when selecting some items (usually the other option) throwing these in the console: [com.apple.FamilyControls.ActivityPickerExtension(1150.1)] Connection to plugin invalidated while in use AX Lookup problem - errorCode:1100 error:Permission denied portName:'com.apple.iphone.axserver' PID:22091 ( 0 AXRuntime 0x00000001c603b0fc _AXGetPortFromCache + 800 1 AXRuntime 0x00000001c603cce0 AXUIElementPerformFencedActionWithValue + 700 2 UIKit 0x0000000230de3ec8 DDE6E0C5-2AC3-3C73-8CFE-BC88DE35BB5F + 1453768 3 libdispatch.dylib 0x0000000103ef0b98 _dispatch_call_block_and_release + 32 4 libdispatch.dylib 0x0000000103ef27bc _dispatch_client_callout + 20 5 libdispatch.dylib 0x0000000103efa66c _dispatch_lane_serial_drain + 832 6 libdispatch.dylib 0x0000000103efb408 _dispatch_lane_invoke + 408 7 libdispatch.dylib 0x0000000103f08404 _dispatch_root_queue_drain_deferred_wlh + 328 8 libdispatch.dylib 0x0000000103f07a38 _dispatch_workloop_worker_thread + 444 9 libsystem_pthread.dylib 0x00000001f0824f20 _pthread_wqthread + 288 10 libsystem_pthread.dylib 0x00000001f0824fc0 start_wqthread + 8 ) This also happens in production apps like the Opal. The questions are: At least how to detect it to be able to manually reload the sheet (like what Opal does and shows an alert when this happens) How to prevent it in the first place? I really appreciate any help you can provide.

Hey there, I have an app where I create custom Advanced App Clip Experiences for other businesses which seems to be a valid thing. I do create them via API. Upon creation everything looks fine: when I go to App Store Connect -> App -> Advanced App Clip Experiences, I do see the new App Clip Experience I've just created. Their status is Received (as any other active experiences) and have a custom URL. The issue is weird timing when the Advanced App Clip Experience actually becomes available on the iPhone (can be triggered via App Clip Code, etc). Some experiences become available literally immediately but others take days (some take 1-2 days, some take ~5 days). I'm not sure why there's a bid difference for an Advanced App Clip to be actually active. Does anyone have any kind of experience with that? I don't change domain settings, app's settings, etc. I'm just creating a new experience (both via API or manually at App Store Connect) and I do have different "activation" times for different App Clips. Same when I delete an Advanced App Clip Experience, it will still be available for next couple days. I get there might be caching stuff, etc. But the difference is quite huge and makes no sense since as I've mentioned some clips become available immediately but some takes days to be available. Thank you!

I’m trying to integrate Screen Time usage data into my iOS app. The goal is to fetch the total time a user spends on their device (daily or weekly), and store this locally for analysis. So far, I’ve explored the DeviceActivity and FamilyControls frameworks: 1.DeviceActivityReport works but seems tied to extensions that show reports, not directly fetching raw values inside the main app. 2.I haven’t found a way to simply retrieve the total screen-on time (similar to what Settings → Screen Time shows). My questions: 1.Is there any public API that allows retrieving the user’s total Screen Time (like the one shown in Settings)? If yes, what’s the correct approach — should I use 2.DeviceActivityMonitorExtension, FamilyActivitySelection, or another framework? 3.If not, is it expected that this data is only available in the Settings app and not exposed to developers? Any guidance or official confirmation would be really helpful. Thanks in advance!

Hello everyone, I’d like to propose Sense & Store — a seamless integration between Safari and the App Store, powered by on-device AI, designed to understand what users are reading, searching, or selecting in Safari, and suggest relevant apps that match their current context or intention. 🔍 Key Idea: “Sense” the user’s need through intelligent analysis of web content, then “Store” — offer the most relevant app, either already installed or available in the App Store. 🌟 Core Features: • AI-powered context detection directly inside Safari • Real-time app suggestions based on user intent • Smart overlays when selecting text or data (e.g., phone numbers, emails, tools) • Privacy-first: All AI runs on-device (Apple Neural Engine) • Instant App Launch or Installation via StoreKit ✅ Examples: • Reading an article on productivity? → Suggests Notion or Things. • Looking up meditation tips? → Recommends Calm or Headspace. • Selecting a phone number? → Offers CRM or spam blocker apps. • Exploring code samples? → Suggests Pythonista or developer tools. 🔒 Privacy & Performance: • 100% on-device intelligence (no data sent to servers) • Follows Apple’s privacy framework • Works with SafariKit + StoreKit + CoreML ⸻ I’m happy to provide a full prototype roadmap and technical architecture. Feedback and collaboration are welcome! Would love to hear your thoughts — especially from developers who build for Safari, App Clips, or work with CoreML. Thanks! Jose Luiz Horta Barbosa Maurity Cruz - Apple lover...