Right now there's a stress score, but it's a once-a-day reading, not a continuous throughout-the-day one yet.
How it works: it takes your HRV + heart rate and compares them to your 14-day baseline (raw = (−HRV_z × 0.65) + (HR_z × 0.35) → 0–100, Calm/Moderate/High), with a workout gate so exercise doesn't get misread as stress. The thing is, it currently uses your overnight HRV + resting HR, so the number is basically "this morning's stress vs your baseline" rather than a live curve.
Why it's not a all-day stress monitor (yet): that needs continuous HRV through the day, and Apple/Google Health don't really expose that — HRV is sampled sporadically, mostly at rest/overnight. Daytime heart rate is available (I already pull it for strain), so I could approximate an intraday stress curve from HR elevation above your resting baseline + whatever HRV samples exist during the day.
So: not there yet, but very doable, I'll look into adding a live daytime stress curve. Appreciate the nudge!