HeartTX: Heart Rate Broadcast

Your heart rate. Transmitted. HeartTX is a free Apple Watch heart rate broadcaster for compatible fitness apps and devices. No ads. No subscriptions. Direct reception has been tested with Zwift on Apple TV. No iPhone app relays your pulse. TWO WAYS TO START Tap Start for a session without a time limit. Choose Timer for an automatic stop after 1–240 minutes. Your last timer duration is remembered, and the remaining time appears below your pulse. Stop at any time with the button at the bottom of the screen. MADE FOR A QUICK GLANCE A clear live heart rate display, connection indicator and simple controls fit on one screen. Old readings are hidden instead of being shown as current measurements. DIRECT BY DESIGN No HeartTX account, ads, analytics or cloud upload. The developer receives no heart rate data. While broadcasting, nearby compatible Bluetooth receivers can connect without a pairing code. Your receiving fitness app manages its own records. HOW TO CONNECT 1. Wear your Apple Watch and open HeartTX. 2. Tap Start or Timer and allow heart rate, workout and Bluetooth access. 3. In your fitness app, choose HeartTX as the heart rate sensor. 4. Tap Stop when finished, or let the timer end the session. HeartTX uses a temporary workout session for continuous measurement and discards that workout when stopped. Apple Watch may still record health samples and contribute to Activity rings. Another workout app may interrupt the session. Requires watchOS 26 or later. Tested with Apple Watch Ultra on watchOS 27.0.1 and Zwift on Apple TV; other configurations are not yet verified. A paired iPhone may be needed for normal Apple Watch setup. HeartTX is a fitness tool, not a medical device. HeartTX is independent and is not affiliated with or endorsed by Apple or Zwift.