Hi guys, In WWDC23 session 10016: Build custom workouts with WorkoutKit , the presenters mentioned that a Workout Plan can be exported to a JSON or binary file, and also showed a code snip: let binaryRepresentation = try myCyclingWorkout.dataRepresentation(in: .compactBinary) However in the current SDK, the property dataRepresentation can not be exported with a specific format, the base64EncodedString() result is unreadable. Does anyone know how to export it as a JSON string now? Thanks very much.

We are seeing an issue where sending data using the asynchronous method HKWorkoutSession.sendToRemoteWorkoutSession(data: Data) will never return in some cases (no success nor failure). This issue is happening for roughly 5% of Workouts started and will stay broken for the whole workout. The other 95% of the workouts, the connection works flawlessly. This happens on both watchOS 10 and 11, and with phones running iOS 17 or 18. The issue is quite random and not reproducible. Our app has thousands of workouts a day that use the workout session workout data send, with constant messages being send every few seconds. In some of those 5% cases the "sendToRemoteWorkoutSession" will throw way later, like 30+ minutes later, if the watch app is awake long enough to capture a log of a failure. Our code uses the same flow as in the sample project: https://developer.apple.com/documentation/healthkit/workouts_and_activity_rings/building_a_multidevice_workout_app Here is some sample code, which is pretty simple. Setup code: let workoutSession = try HKWorkoutSession(healthStore: healthStore, configuration: configuration) workoutSession.delegate = self activeWorkoutSession?.startMirroringToCompanionDevice { success, error in print("Mirroring started on companion device: \(success), error: \(error)") } workoutSession?.prepare() then later we send data using the workout session: do { print("Will send data") try await workoutSession.sendToRemoteWorkoutSession(data: data) print("Successfully sent data") // This nor the error may be called after waiting extensive amounts of time } catch { print("Failed to send data, error: \(error)") // This nor the success may be called after waiting extensive amounts of time } So far, the only fix is to restart the phone and watch at the same time, which is not a great user experience. Is anyone else seeing this issue? or know how to fix this issue?

WorkoutKit WorkoutScheduler seems broken with the first beta of iOS 18.2. I have tested using my app from Xcode and the one that is on the App Store (and working properly on other devices), and it's not working with this new beta of iOS. They appears in WorkoutScheduler.shared.scheduledWorkouts, but not on the watch. I even tried with other apps that do the same with Manual add to Apple Watch with SwiftUI workoutPreview work. Xcode 16.0 iOS 18.2 Beta 1 WatchOS 11.1

I'm currently trying to collect some of the following data whilst running a workout in a WatchOS app I'm building. Below are the data points I'm trying to retrieve: HKQuantityType.init(.heartRate) HKQuantityType.init(.oxygenSaturation) HKQuantityType.init(.respiratoryRate) HKQuantityType.init(.bloodPressureSystolic) HKQuantityType.init(.bloodPressureDiastolic) HKQuantityType.init(.heartRateVariabilitySDNN) I'm using the following delegate function workoutBuilder(_:didCollectDataOf:) which is part of HKLiveWorkoutBuilderDelegate Something I'm realising whilst running this on the simulator and on my Apple Watch is out of all of the Quantity types I'm requesting. Only the heart rate is being called via the delegate function when trying to retrieve the statistic. Is this the intended behaviour of this API? Since there's no docs about what is and isn't exposed

Hello. I have NFC tags that I scan before walking my dog, that set off a list of shortcuts. The shortcuts have been failing the last couple of weeks but were fine before that. seems to be a problem with linking to starting a walk in apple watch workouts?! I have the latest iOS 18 public beta running (18.1) and watchOS 11.0.1

I've realised with the sample code from the WWDC video below I'm getting the following error when trying to use the iPhone simulator and apple watch simulator paired. Whenever i try to test out the sample project I'm getting the following error. Failed to send data: Error Domain=com.apple.healthkit Code=300 "Remote device is unreachable" UserInfo={NSLocalizedDescription=Remote device is unreachable, NSUnderlyingError=0x600000c9c900 {Error Domain=RPErrorDomain Code=-6727 "kNotFoundErr ('rapport:rdid:PairedCompanion' not found)" UserInfo={cuErrorDesc=kNotFoundErr ('rapport:rdid:PairedCompanion' not found), cuErrorMsg='rapport:rdid:PairedCompanion' not found, NSLocalizedDescription=kNotFoundErr ('rapport:rdid:PairedCompanion' not found)}}} Is it not possible to not test out the new WorkoutKit mirroring API's using the simulator? Currently right now if you run the project you'll notice that you can start a workout session on the iPhone > Apple Watch but there is no way to control and mirror on both devices at the moment i.e You can't control the iPhone app on the Apple Watch and vice versa. Also because of this the iPhone can't send data to the Apple Watch i.e. pause, end, water etc. I'm guessing this is meant to be possible since it seems a bit strange to only be able to test this out with actual devices. WWDC Session https://developer.apple.com/wwdc23/10023 Sample Code https://developer.apple.com/documentation/healthkit/workouts_and_activity_rings/building_a_multidevice_workout_app

Apple is using the RPE scale for workout effort scores. This stands for the Rate of Perceived Exertion. They're specifically using the CR-10 scale, at least from what I can tell by saving values to HealthKit. They only accept value between 0 and 10. Has anyone been able to find a scientific or academic paper on how they have chosen their different effort breakouts? Right from the Fitness app on iPhone and Activity app on Apple Watch: 1-3 Easy 4-6 Moderate 7-8 Hard 9-10 All Out There is zero documentation on these new types, which makes it difficult for workout recording apps to properly and appropriately save this new data type. Sure, we can use the Apple apps as a reference, but since there isn't a built-in Apple SwiftUI sheet to present this data, and no references to academia to point our users to, our solutions would just look the same. FB15315876 - Documentation / HealthKit: Publish documentation about .workoutEffortScore and .estimatedWorkoutEffortScore FB15316109 - Documentation / HealthKit: Add documentation to .estimatedWorkoutEffortScore and .workoutEffortScore that you can't save those samples via the save API and that they must be related and let that API save the sample FB15316251 - Documentation / HealthKit: Add documentation for acceptible values of .estimatedWorkoutEffortScore and .workoutEffortScore - don't rely on a runtime error! Apple missed making an enum for all third party developers this year.

Hi everyone, I’m reaching out to see if anyone else has experienced issues with the workoutPreview API. I’ve been trying to get it to send workouts to the Apple Watch, but it’s not working as expected. Even the example code provided in the official documentation fails to do the job. For reference, I’m using the latest stable (non-beta) versions of iOS and watchOS. import SwiftUI import WorkoutKit struct PresentPreviewDemo: View { private let cyclingWorkoutPlan: WorkoutPlan @State var showPreview: Bool = false init() { cyclingWorkoutPlan = WorkoutPlan(.custom(WorkoutStore.createCyclingCustomWorkout())) } var body: some View { Button("Present Cycling Workout Preview") { showPreview.toggle() } .workoutPreview(cyclingWorkoutPlan, isPresented: $showPreview) } } struct PresentPreviewDemo_Previews: PreviewProvider { static var previews: some View { PresentPreviewDemo() } } It used to work but it is not working anymore. Has anyone else run into this problem? Is there a known issue or workaround that I might have missed? I’ve tried everything I can think of, and this is blocking my progress. Any insights or suggestions would be greatly appreciated! Thanks in advance!

Hi! I've added the code of the multidevice workout app from Apple to my app and I found some issues that I cannot see on the sample app. In my app, to pause or end the workout from the watch, the iOS companion app has to be opened or at least on background, but never closed. What I'm doing wrong?

Hey folks, a couple of questions regarding WorkoutKit: What happened to validation errors? They are mentioned in the WWDC23 video, but no longer are present in the API. It seems a fatal error is thrown if the workout fails validation (for example setting a negative distance in a workout goal). What is the logic of the WorkoutScheduler, if we try to add more workouts than is allowed? If the limit is 50, what happens when we try to add a 51st? Are workouts de-queued based on date or anything? API documentation is very sparse Do completed workouts and workouts with a scheduled date in the past stay in the WorkoutScheduler? Are we responsible for removing these? I guess my overall question regarding the WorkoutScheduler is, what are we responsible for managing and what is handled gracefully for us. None of these answers seem to be openly available, but if anyone know anecdotally or even better from the WorkoutKit team, I'd be very grateful! Thanks!

I think I know the answer to this question, but is there any way to 'manually' add distance to a SingleGoalWorkout? I.e., I want to make a SingleGoalWorkout with a location set to .indoor, and then add any meters the user has covered from a BLE Fitness Machine Device (exercise bike, indoor rower etc.) towards the workout goal. Is this possible?

The session Build custom swimming workouts with WorkoutKit mentions Outdoor activities supporting distance goals and lists: Cycling Running Hiking Walking Swimming Wheelchair walk + run And new: Golf Rowing Downhill skiing Snowboarding Lacrosse Hockey Disc Sports Skating Paddle sports Soccer American football Australian football Rugby Cross country skiing I know the previous 6 have GPS tracks saved with the workout in Health. Do all of the other ones now also save the GPS track to Health? If not all of them, which do?

Hello, I’m currently developing a fitness app for watchOS that lets a user to manually set a desired heart rate target zone (enter numbers representing the lower and upper boundaries) and start a workout (right now it’s only “Other” type). After that my app monitors user’s heart rate and alerts them when they’re out of zone. When user ends the workout, the info about this workout appears on “Fitness” iOS app, and user can see the workout data like Workout Time, Active and Total Calories, Avg. Heart Rate. Also user can see Heart Rate chart with info how their heart rate was changing during a workout (see the Figure 1). Now to the question. When user clicks “Show More” button above the Heart Rate chart, they can see the same Heart Rate chart and another one, with Post-Workout Heart Rate (see the Figure 2). But there is no “Estimated time in each heart rate zone” as one can see in the workout’s details that were recorded from Apple’s workout (watchOS “Workout” app, for a workout of “Other” type as well). Please see the Figure 3. The question is: is it possible to add “Estimated time in each heart rate zone” to workout recorded via my third-party app so it would look like on the Figure 3 in "Fitness" iOS app, and if it's possible, what steps should I undertake to implement this ? Thanks in advance! I posted the screenshots in the replies to the post, because otherwise I was not able to submit a post ("sensitive language" warning, I suspect it's because of the ids in the attached screenshot's urls)

Hello, I am using the project from https://developer.apple.com/documentation/healthkit/workouts_and_activity_rings/building_a_multidevice_workout_app The workout is starting on the watch and I can see the metrics, but it seems the mirroring with the phone is not working, I am getting this errors [mirroring] <HKWorkoutSession:0x600002c10100 57C340BA-2AA9-4477-9AC8-181698A526A5 running [Primary]>: Failed to send data to remote session with error: Error Domain=com.apple.healthkit Code=300 "Remote device is unreachable" UserInfo={NSLocalizedDescription=Remote device is unreachable, NSUnderlyingError=0x600000c53b70 {Error Domain=RPErrorDomain Code=-6727 "kNotFoundErr ('rapport:rdid:PairedCompanion' not found)" UserInfo={cuErrorDesc=kNotFoundErr ('rapport:rdid:PairedCompanion' not found), cuErrorMsg='rapport:rdid:PairedCompanion' not found, NSLocalizedDescription=kNotFoundErr ('rapport:rdid:PairedCompanion' not found)}}} Does anybody else has this issue? Thank you

The WWDC23 session number 10016 is referring to a way to generate .workout files (timecode 09:43) in both binary and JSON format. Unfortunately, the API seems to have changed: CustomWorkoutComposition renamed to CustomWorkout .dataRepresentation disappeared Ideally I would like to generate .workout files directly in JSON format but there is no specifications published and no documentation to generate them. Any idea where I should look?

Hello fellow developers, I've recently developed a workout companion watch app for iOS. However, I'm now have a task of implementing custom workouts for my app. I've come across a video demonstrating how to create and schedule custom workouts for the watch app, which I believe will be incredibly helpful for my project. Video Link: Creating Custom Workouts for iOS Watch App If anyone knows of any additional resources, such as articles or videos, that further explores this topic, I would greatly appreciate it if you could share them with me. Thank you for your assistance! Best regards, Pranit Bhogale

Please reference the Sample Planner app which can be found at the below link. https://developer.apple.com/documentation/WorkoutKit/customizing-workouts-with-workoutkit. In WorkoutStore.swift, all of the values are hard coded. I would like to turn them into variables stored in @EnvironmentObject (WorkoutStoreValue). With the below code, using "singleRunStartDelay" as a trial, I can get that variable passed to the WorkStore struct only when the app is first opened, however, I have not been able to get it changed in realtime. I need help with changing the WorkoutStore struct to have the values updated in realtime. I have tried changing the func from static but that gives an error (Instance member 'createSingleRunWorkout' cannot be used on type 'WorkoutStore'; did you mean to use a value of this type instead?) I'm now learning Xcode/SwiftUI. I have been stuck for about four day trying many different ideas. Thanks // Copyright © 2024 Apple. All rights reserved. /* The structure that returns running workout compositions. */ import HealthKit import WorkoutKit import SwiftUI import Foundation struct WorkoutStore{ @EnvironmentObject var workoutStoreValue: WorkoutStoreValue static func createSingleRunWorkout() -> CustomWorkout { let getReadyStep = WorkoutStep(goal: .open) //fixed to .open let singleRunDelay = WorkoutStoreValue.shared.singleRunStartDelay var onYourMarkStep = IntervalStep(.work) onYourMarkStep.step.goal = .time(Double(singleRunDelay), .seconds) //you have this much time to start var runStep = IntervalStep(.work) runStep.step.goal = .distance(100, .meters) //hard coded for now. Need to insert distance variable here runStep.step.alert = .speed(3...4, unit: .metersPerSecond, metric: .current) // Would like to insert alert variables here var block = IntervalBlock() block.steps = [ onYourMarkStep, runStep ] block.iterations = 1 //fixed at 1. Would like to insert as a variable return CustomWorkout(activity: .running, location: .outdoor, displayName: "Single run mode", warmup: getReadyStep, blocks: [block]) } }