Hi! I am using the HKAnchoredObjectQuery to first get a snapshot of the initial results, and then trigger an updateHandler. I need to handle the initial results and the updates separately, which is why I implemented two completions. When I test the code, it works for a while. New and deleted samples trigger the updateHandler. However, after a while there appears an error: [connection] nw_read_request_report [C2] Receive failed with error "Software caused connection abort" Followingly, the updateHandler will stop getting triggered when I add updates in Apple health. Anyone have experience with this? func getMostRecentSample(for sampleType: HKSampleType, anchorKey: String, completion: @escaping (HKQuantitySample?, Error?) -> Swift.Void, updateHandler: @escaping (HKQuantitySample, Error?) -> Swift.Void) {     // If it is the first initialization, anchor is passed as nil     var anchor: HKQueryAnchor? = nil // Check for previous saved anchor in userdefaults     if UserDefaults.standard.object(forKey: anchorKey) != nil {       let data = UserDefaults.standard.object(forKey: anchorKey) as! Data       do {         guard let newAnchor = try NSKeyedUnarchiver.unarchivedObject(ofClass: HKQueryAnchor.self, from: data) else {           print("Could not parse anchor to HKQueryAnchor type")           return         }         anchor = newAnchor       } catch {         print("Error retreiving anchor from UserDefaults")       }     }     let query = HKAnchoredObjectQuery(type: sampleType,                      predicate: nil,                      anchor: anchor,                      limit: HKObjectQueryNoLimit                       ) { (query, samplesOrNil, _, newAnchor, errorOrNil) in       guard let samples = samplesOrNil as? [HKQuantitySample] else {         fatalError("*** An error occurred during the initial query: \(errorOrNil!.localizedDescription) ***")       }       if let anchor = newAnchor {         do {           let data = try NSKeyedArchiver.archivedData(withRootObject: anchor as Any, requiringSecureCoding: false)           UserDefaults.standard.set(data, forKey: anchorKey)         } catch {           print("Error retreiving anchor from UserDefaults")         }       }       completion(samples.last, nil)     }           // Setting up long-running query     query.updateHandler = { (query, samplesOrNil, _, newAnchor, errorOrNil) in       guard let samples = samplesOrNil as? [HKQuantitySample] else {         fatalError("*** An error occurred during an update: \(errorOrNil!.localizedDescription) ***")       }       if let anchor = newAnchor {         do {           let data = try NSKeyedArchiver.archivedData(withRootObject: anchor as Any, requiringSecureCoding: false)           UserDefaults.standard.set(data, forKey: anchorKey)         } catch {           print("Error retreiving anchor from UserDefaults")         }       }       if let sample = samples.last {         updateHandler(sample, nil)       }     }     self.healthStore.execute(query)   }

I’m trying to associate heart rate (HR) data with a mindfulness session (HKCategoryTypeIdentifier.mindfulSession) in HealthKit, but I can’t find any documentation on how to do this. I’ve seen third-party apps (like Medito) successfully log HR within Mindful Minutes, even when the session takes place on an iPhone (not an Apple Watch). However, when I try saving HR in the metadata, it does not appear in the Health app's Mindful Minutes section. Code snippet: func logMindfulnessSession(start: Bool, heartRate: Double? = nil) { let mindfulType = HKCategoryType.categoryType(forIdentifier: .mindfulSession)! let now = Date() let endTime = now.addingTimeInterval(Double(selectedDuration)) var metadata: [String: Any]? = nil if let hr = heartRate { let heartRateUnit = HKUnit.count().unitDivided(by: HKUnit.minute()) let hrQuantity = HKQuantity(unit: heartRateUnit, doubleValue: hr) metadata = ["heartRate": hrQuantity] // ❓ Is there a correct key for HR? } let sample = HKCategorySample( type: mindfulType, value: 0, start: now, end: endTime, metadata: metadata ) healthStore.save(sample) { success, error in if let error = error { print("HealthKit session save error: \(error.localizedDescription)") } else { print("Mindfulness session saved successfully.") if let hr = heartRate { print("Saved with HR: \(hr) BPM") } } } } Questions: What is the correct metadata key for associating heart rate with a mindful session? Does HealthKit require a specific format (e.g., HKQuantitySample) for HR? 0 Are there additional permissions needed to allow HR to appear in Mindful Minutes? Does HR need to be stored separately in HKQuantityTypeIdentifier.heartRate, and if so, how do third-party apps ensure it appears in the same entry as the mindful session? thank you!

Platform & Version: iOS Version: 18.3.1 Development Environment: Xcode 16.2, macOS 14.6.1 Description of the Issue: We're exploring ways to better integrate Apple Fitness+ workouts into our app. We've noticed that some third-party apps, such as Strava and HealthFit, now display Fitness+ workout details, including the title, trainer, and an image. I’ve been investigating how this is possible, and the only relevant change I’ve found is that HKMetadataKeyAppleFitnessPlusCatalogIdentifier is now being set for Fitness+ workouts. However, I can’t find any public API or official documentation that explains how to use these identifiers to retrieve the associated workout details. Question: Is there an official API available to fetch metadata for Fitness+ workouts using these identifiers? Or are these third-party apps potentially accessing private APIs? If no API exists, is the only option to create a manual mapping of these identifiers—something that seems impractical given the constantly evolving Fitness+ workout catalog? Any guidance on this would be greatly appreciated. Thanks!

The background deliver works perfectly when the app is in the background or suspended states. However, when the app is killed (terminated state), the background task does not execute

Apple Watch automatically tracks sleep data and syncs it to the iPhone, making it available through HealthKit for historical analysis. However, there is no way to retrieve real-time data on whether a user has entered sleep, or whether they are in a specific sleep stage at any given moment. Is it possible to provide an interface for real-time sleep status monitoring

Dear Apple Developer Support, I am writing to request assistance with an ongoing issue I'm encountering while developing an iOS application that utilizes HealthKit to fetch heart rate data. My goal is to display near real-time heart rate updates continuously same as displaying in the Apple Watch , I want to show in the iPhone Mobile Application for fitness related. I have implemented the following approaches: HKSampleQuery with a Timer: I've set up a timer to periodically fetch the latest heart rate data. Despite these efforts, I'm consistently facing the following problems: Delayed Updates: The heart rate data displayed in the app often doesn't reflect the current heart rate being measured by the Apple Watch. There seems to be a significant synchronization delay. Inconsistent Background Updates: Background updates, even with background app refresh enabled, are not reliable. The app often only updates when brought to the foreground or after being killed and relaunched. Entitlements: The com.apple.developer.healthkit.background-delivery entitlement error is missing. I have thoroughly reviewed Apple's HealthKit documentation, implemented best practices for HealthKit integration, and verified that all necessary permissions are properly configured. I understand that HealthKit may not be designed for true real-time data, but the current level of delay and inconsistency is making it difficult to provide a useful user experience. Could you please provide guidance on whether achieving near real-time heart rate updates continuously in an iOS app using HealthKit is possible? If so, what are the recommended strategies and best practices to overcome these limitations? I have also tested the application on physical devices with Apple Watch, enabled background app refresh, granted permissions, and referred to HealthKit documentation. I would appreciate any insights or suggestions you can offer to help resolve this issue. Thank you for your time and assistance. Sincerely, Venu Madhav

From the date the app was updated, the step count data retrieved from HealthKit was strange. On the other hand, step count data from the date before the update is imported normally. After deleting and reinstalling the app, the problem did not occur. Is there anyone who has experienced something like this or knows the cause?

Is it possible to develop the following app? The app will measure heart rate variability five times at 2-minute intervals triggered by an event and output the values.