Apple Health to WHOOP data missing

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Level 1

8 points

Apple Health to WHOOP data missing

I am using a Myzone Switch chest heart rate sensor, which transmits data to the Fitiv application. Fitiv then synchronizes this data via Apple Health, which subsequently passes the data to WHOOP.

The key question is the following:

- couple days ago workout was successfully transferred to WHOOP including full heart rate data and heart rate zones.

- On Sunday, using the same sensor, same apps, and same configuration, only the start and end times of the activity were transferred. No heart rate zones were shown.

This indicates that heart rate data is being passed from Apple Health to WHOOP in general, but something in the processing or synchronization chain failed for that specific workout.

I did not change any settings, permissions, or configurations between these workouts.

Could you please help identify where in this data pipeline (Myzone → Fitiv → Apple Health → WHOOP) the issue might have occurred, and why and what format of apple health shoud/have to transver and format

Posted on Jan 13, 2026 4:26 AM

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Answer 1

SravanKrA

Level 10

432,620 points

Jan 13, 2026 4:34 AM in response to savushkinedu

The app developer or the device manufacturer may not have updated their software to ensure compatibility with the iOS version your device is currently running.

If you encounter any challenges with third-party applications or devices, the best course of action is to directly contact the app developer or the manufacturer for further assistance.

Here's a brief guide on how to contact the App Developer:

Identify the app developer.
Visit their website or app store listing.
Look for their contact information or support channels.
Clearly describe the issue you are facing.
Provide any necessary information they may need.
Follow their instructions and provide feedback.
Be patient and follow up if needed.

By reaching out to the app developer, you increase your chances of receiving accurate and personalized support for the challenges you're experiencing. To contact an App developer --> How to contact an app developer - Apple Support

How to Contact the Manufacturer:

Apple Health Integration: WHOOP members using on iOS can connect to Apple Health to sync. How to Connect WHOOP to Apple Health To enable Apple Health integration, follow these steps.
Product Manual: As mentioned, the product manual can be an excellent resource for finding contact information. Look for the "Support" or "Contact Us" section in the manual.
Product Packaging: Check the product's packaging for any contact details, customer support numbers, or websites provided by the manufacturer.
Manufacturer's Website: Visit the official website of the manufacturer. Most reputable companies have a support section where you can find contact information or submit support requests.
Customer Support: Look for a customer support phone number or email address on the manufacturer's website. Some companies even offer live chat support for immediate assistance.
Social Media: Many manufacturers maintain a presence on social media platforms. Consider sending them a message or mentioning them in a post to seek help.
Retailer: If you purchased the product from a retailer, they might also be able to assist you or direct you to the manufacturer's support channels.

When contacting either the app developer or the manufacturer, be sure to provide specific details about the problem you're facing, including any error messages, screenshots, or steps to reproduce the issue. This information will help them better understand and resolve the difficulty you're experiencing.

Remember to remain polite and patient while seeking support, as it may take some time for the developers or manufacturers to respond to your inquiries.

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