Vitals AI uses Apple Intelligence (on-device Foundation Models) to analyze your HealthKit data privately on your iPhone. No cloud, no servers. Features: - AI health insights: HRV trends, sleep quality, activity analysis - Dashboard with Activity, Recovery & Readiness scores - Track steps, calories, distance, heart rate, sleep - Smart trends: daily, weekly, monthly, yearly - Apple Watch companion with complications - Zero data collection Based on AHA, CDC, WHO guidelines. iOS 26.