The Core app can connect to your Apple Health account, for the tracking of mindful minutes. This will also give Core access to some of your basic demographic data (age and sex) which can be helpful in generating more accurate analysis of your HRV.
To connect to Apple health, navigate to the “Profile”, tap “Preferences”, then toggle “Apple Health connected.”
The Android version of the Core app does not yet offer an integration with Google Fit, or other fitness platforms.