Heart for Bluetooth

Lukas the Coder

About this app

Do you like cycling and following your heart rate on your phone or computer? This application makes it possible. Heart for Bluetooth will provide your heart rate via Bluetooth from your watch to your phone or bike computer. Until now, this was possible only with a chest strap. Save money for that extra hardware and turn your watch into a heart rate Bluetooth provider.

Installation notes:

This application works only on Wear OS devices, it cannot be installed on Android phones. Use Play Store on your Watch to install it.

How does it work?

Start Heart for Bluetooth on your watch and connect it as an external heart rate sensor to your PC, phone, or bike computer. Your watch will provide the current heart rate via a standardized Bluetooth Low Energy protocol in the same way as any other chest strap would.

Data stored

The only purpose of this application is to provide your current heart rate via Bluetooth to other sports applications of your choice.
This application does not use an internet connection, does not send any data to the cloud, does not track usage statistics, does not provide any data to the author, and does not store your heart rate on the watch.

Tested watches

TicWatch S2 and Pro and Pro 3, Montblanc Summit 2+, Galaxy Watch 4/5, Fossil Gen 5, Huawei Watch 2, Proform/Ifit, ...

Tested client devices and applications

Runtastic, Wahoo, Sleep as Android, Zwift, Ride with GPS, Polar Beat, Pace to race, Pedelec (COBI Bike), Hammerhead Karoo, Peloton, Wahoo Elemnt GPS, NordicTrack, ...

Garmin Edge 130 is supported, Garmin Edge 530 stopped working after an update of the Edge device a year ago.

Ratings and reviews

Tried this on my Wife's Gw6 and it is nice to have the watch broadcast to her wahoo bike computer. Not nice that it doesnt broadcast when the watch screen is off. Even with the display on set in configuration the watch display still goes off and cuts the signal to the bike computer. the second thebdisplay is back on I get HR data.

This is great, but on the OnePlus Watch 3 the heart rate stops broadcasting when the screen turns off or I think when the app loses focus. Is there a way to prevent that?

Smartwatch 4 and Heart for Bluetooth v4.6 work a charm on Schwinn IC4. And it works great on Rouvy bike app. But on JRNY bike app 2.16.0 on Android, the Smartwatch shows up in the list of Heart Rate Monitors (as HR - BWX) ), but when I click to connect it, it tries and fails.

What's new

The finish screen allows starting a new training.
Support for ambient mode (dimmed screen).