HealthKit
Definition
Apple's framework for sharing health and fitness data between apps on iPhone, shown to users as the Health app. Your Apple Watch writes to it, other trackers' apps can write to it, and MoveTogether reads from it.
How MoveTogether uses it.
On iPhone, Apple Health is how every device reaches MoveTogether. Apple Watch writes to it on its own. Garmin, WHOOP, Oura, Polar, Strava, Ultrahuman, and Google Health / Fitbit share into it from their own apps once you turn sharing on there. You then pick which source counts toward your rings. No wearable? Your iPhone's own steps and active energy work too.
MoveTogether asks for read-only access and never writes to Apple Health. It reads steps, active energy, exercise minutes, workouts, and Apple's daily activity summary for your rings and competitions. It also reads heart rate, sleep, and body weight for Coach Mo and your weight chart. These leave your device when they sync, and none of them affect scoring.
Pro accounts import up to 30 days of activity from before you joined; other accounts start when you join. To review or revoke access, open the iPhone Settings app, then Privacy & Security, then Health, then MoveTogether. On Android, Health Connect plays the same role.
See healthkit in action.
MoveTogether is on the App Store and Google Play. Bring any device that syncs to Apple Health or Health Connect, or just your phone, and start your first competition this week.