Features
Everything Cortisol+ does
Real-time cortisol estimation, sleep-cortisol correlation, and guided breathwork — all powered by your existing Apple Watch.
Real-time
HRV-based cortisol score
Continuous estimation from heart rate variability — the gold standard wearable biomarker for autonomic stress. Personalized to your baseline.
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Overnight
Sleep × cortisol
See how every night of sleep drives next-morning cortisol. REM, deep, and core sleep stage analysis correlated with your HRV-derived cortisol pattern.
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Intervene
Zen mode & breathwork
Guided breathing protocols — box, 4-7-8, physiological sigh, resonance — with Apple Watch HRV measurement of the cortisol-lowering effect after every session.
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