I was searching for this kind of app for a very long time. I checked HC-Gateway. But it needs external server or give hosted URL. I don't want to share my data to external service. So I went and built my own and made it source available. You can use this with n8n, activepieces, or any POST URL which accepts data. It's still in beta, feel free to try and share feedback.
Show HN: I made an Android app which sends Health Connect data to your webhooks | Heykuki News