Your heart rate,
on every cycling app.

HR Broadcast turns Apple Watch into a Bluetooth heart rate sensor compatible with Garmin, Wahoo, Zwift, and more.

Download on the App Store
76BPM

How it works

1

Wear your Apple Watch

Open HR Broadcast on Apple Watch and tap Start to begin the workout session.

2

Open the iPhone app

HR Broadcast on iPhone receives heart rate from your Watch and broadcasts it over Bluetooth.

3

Connect your cycling app

In Garmin, Wahoo, Zwift, or any BLE-compatible app, select "HR Broadcast · iPhone" as your heart rate sensor.

Features

⚡

Real-time

Heart rate updates transmitted instantly as your Watch measures each beat.

📡

Standard BLE HRM

Broadcasts as a standard Bluetooth Heart Rate Profile — works with any compatible device.

🔒

Privacy first

No account, no server. Heart rate data never leaves your device except via local Bluetooth.

🌐

Bilingual

Full support for English and Chinese, auto-detected from your system language.