Breathing Trainer: HRV Calm

Calm your nervous system with guided breathing — and see it working. Measure your HRV before and after every session and watch your calm grow.

Breathing Trainer helps you calm your nervous system — and actually shows it working. Measure your heart-rate variability (HRV) and pulse before and after each session, and watch your calm grow session after session.

PROVEN BREATHING PATTERNS • Box 4-4-4-4, 4-7-8, Coherent 5.5, Physiological Sigh, Relaxing, Energizing, Triangle • Build your own pattern with a simple visual editor • Goal routes for Sleep, Focus, Anxiety, Energy and Stress

SEE THE CALM, DON'T JUST FEEL IT • Reads HRV & heart rate from Apple Health / Apple Watch • No Watch? Measure your pulse right on the camera • A before/after delta shows how much you settled down

A CALMER SESSION • Breathing orb with gentle voice guidance and soft breath tones • Core Haptics guide every phase — inhale, hold, exhale • SOS panic overlay for the moments you need it most

STAY WITH IT • Streaks, Mindful Minutes and an HRV trend • Writes sessions to Apple Health as Mindful Minutes • Fully offline — no account, no sign-up

Breathing Trainer Pro unlocks the full pattern library, all goal routes, HRV trends, and guided voice & breath tones. Subscriptions renew automatically unless cancelled; a lifetime option is available.

Breathing Trainer is a wellness app, not a medical device — HRV and pulse figures are estimates.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/