NEW — Stress: your live state, measured against your own normal. Hummingbird now folds your live HRV and heart rate into a single 0–100 Stress score, anchored to your personal 30-day baseline. 50 is a typical day for you; lower means HRV up and heart rate settled, higher means your body is working harder than usual. Because it's calibrated to your physiology — not a population average — it reads your engine, not the average engine, like an RPM gauge that knows the difference between a sports car and a diesel. It updates live during a session and sits on your home screen between them, and every session shows a pre→post delta — so one glance answers the question HRV alone makes you work for: am I wound up right now, and did that session change it? It's a glance, not a diagnosis.

Two new ways to see your practice working: RSA and Coherence. rMSSD alone can be a noisy read of vagal activity during slow, paced breathing — it often drops even when a session is going well. So we added two metrics that look at the same heartbeat data from a clearer angle, with no extra hardware and no extra strain on your strap. • RSA measures the depth of your breath-driven heart-rate swing — how strong your "vagal brake" is. It rises during effective humming and paced breathing, and it's trainable: it strengthens with consistent practice, like a muscle. • Coherence scores how clean and rhythmic that oscillation is, 0–100. High coherence means you've locked into a smooth, steady resonance — the state people associate with feeling calm and focused. Both appear live in the in-session bio strip and as 7-day trends on your home and Impact screens. Tap either tile to see how to read them together — RSA reads depth, Coherence reads cleanness, and the combination tells you more than either alone.

Added ability to share a session to social media: x, facebook, whatapp, etc...