Health Connect is a platform by Google that allows health and fitness apps to share data with each other on Android devices. It acts as a unified storage where apps (such as Samsung Health, Google Fit, Fitbit, and others) record data about heart rate, steps, sleep, and other metrics.
AllTracker reads data from Health Connect, allowing you to monitor the health status of the target device. Please note that there may be gaps in the data if the watch is not on the wrist or if the source app (e.g., Samsung Health) is not configured to sync with Health Connect.