Available on the App Store

Heart rate from your Watch. Straight to your bike computer.

Turn your Apple Watch into a Bluetooth heart-rate monitor for your bike computer or training app. Your heart rate goes straight from Watch to receiver, without an iPhone relay.

View on the App Store Report a bug

Free · Apple Watch · watchOS 26 or later

Get connected

Pair a heart-rate receiver

Open Watch HRM BLE on your Apple Watch, tap Start, and grant the requested Health access. Keep the Watch snug on your wrist.
On your bike computer or training app, open its heart rate monitor pairing screen and search for a Bluetooth heart rate monitor.
Select Watch HRM BLE and check that your heart rate appears on the receiver.
When you finish, open Controls on the Watch, choose End broadcast, and confirm.

Compatibility

What has been checked?

Tested by the developer

Wahoo ELEMNT ACE, MyWhoosh & Zwift

Tested by the developer for live heart-rate sharing.

Results apply to the setups tested. Other models and platforms may behave differently.

Expected; not tested

Other BLE heart-rate receivers

Receivers that accept a Bluetooth heart-rate monitor are expected to work. A user has reported initial success with Garmin Edge 1050; other Garmin models have not yet been verified.

ANT+-only receivers are not supported. Watch HRM BLE is independent and is not affiliated with or endorsed by Wahoo, Garmin, MyWhoosh, or Zwift.

Positive feedback

From the cycling community

User report · Initial compatibility

Apple Watch Series 9 + Garmin Edge 1050

A user reported successful pairing and live heart-rate readings on a Garmin Edge 1050 running firmware 33.12, sent directly from an Apple Watch Series 9 without an iPhone relay or Garmin Connect.

Early results only: the user had not yet completed a full 40–60-minute outdoor ride. Long-duration stability and other Garmin models remain unverified.

Reported 16 October 2026 · Summarized from user feedback

Common questions

Help & common questions

The receiver cannot find my Watch

Check that a broadcast session is running on the Watch and search from the receiver’s heart rate monitor screen. Some devices support Bluetooth for phone sync but do not accept a BLE heart rate monitor. Check the receiver’s manual for that specific feature.

The heart-rate value is blank or frozen

Check the Watch fit and Health access for Watch HRM BLE. Allow heart-rate reading and workout access, then end the session and start again. Check that your heart rate updates on the receiver.

Does the widget show live heart rate?

No. The optional Smart Stack widget shows the last saved reading and its age. It is a snapshot and may refresh later than the main app.

Does this save a workout?

The app runs a live workout to read heart rate, then discards its workout record when you end the session. The session may still affect Activity rings or another workout app.

Do I need my iPhone nearby?

Heart-rate measurements travel directly from the Watch to the receiver. An iPhone is not used as a relay during broadcasting.

Found a bug or have a suggestion?

Please get in touch — your feedback helps make Watch HRM BLE better. Receiver compatibility reports are welcome too.

Tell us your Watch and receiver models, their software versions, the app version, and what happened. Please do not send heart-rate logs or other health data.

hrm.ble.support@fastmail.com

A little thank-you

Support Watch HRM BLE

I plan to keep Watch HRM BLE completely free. If it has helped you, you can leave an optional tip to support its development. There’s absolutely no pressure.

Sharing the app with friends or your local cycling group is another lovely way to help.