https://github.com/burnnat/ha-polar
Home Assistant: Is Polar currently working?
https://community.home-assistant.io/t/is-polar-currently-working/269994
Available Data Types
- Exercise data: Yes
- Daily activity data: Yes
- Physical information data: Yes
Polar Sensor Logger App to and Home Assistant:
https://community.home-assistant.io/t/polar-sensor-logger-app-over-mqtt-to-home-assistant/424955