Apple has launched a redesigned Health app for iOS 20, introducing two major metrics: a dynamic Health Age calculation and a daily Readiness Score.
The update leverages continuous sensor telemetry—combining heart rate variability (HRV), VO2 max trends, sleep architecture, and movement consistency—to synthesize complex physiological data into simple daily indicators:
Health Age: Estimates biological cardiovascular and metabolic function compared to chronological age, providing long-term wellness baselines.
Readiness Score: Evaluates overnight recovery and strain capacity to recommend optimal physical exertion levels for the day ahead.
The features mark Apple's direct competitive expansion into performance tracking dominated by Oura, Whoop, and Garmin, while keeping all baseline computation securely on-device via Apple Intelligence.
