ONVY is beta-testing an iOS app that can provide insights from data collated from your wearables. The platform can merge metrics from over 300 services, including Apple and Fitbit. Based on the data from your various wearables, the app will give you an overall Balance Score, with AI recommendations to improve your health.
https://www.notebookcheck.net/ONVY-app-merges-health-data-from-over-300-services-including-Apple-Watch-Fitbit-Garmin-and-Oura.620252.0.html