iWatch app to sync Bio data with existing flutter app

I am looking to hire a freelancer to develop an iWatch app that can sync heart rate and SpO2 data with our existing Flutter app. The app will function as simple bridge to transmit the above data to the app on the phone, no other functionalities are requested. Our app can be downloaded at this link: https://apps.apple.com/it/app/metadriving/id1659247492
The ideal candidate will have experience with our Flutter app's codebase and can provide basic functionality for the iWatch app.

Skills and Experience:
- Experience with Flutter app's codebase
- Understanding of iWatch app development
- Experience with syncing bio data
- Familiarity with heart rate tracking
- Ability to provide basic functionality for the iWatch app.