Your phone and watch already track a lot about your body — but a pile of graphs doesn't tell you whether today was a good day. That's the idea behind a health score: one number, every morning, that answers the question at a glance. Here's what goes into Sanna's 0–100 score and how to read it.
One number, every morning
Each morning, Sanna reads the health data your iPhone already collects and combines it into a single score from 0 to 100. Instead of opening four different charts and guessing how they add up, you get one number and a plain-English explanation of what drove it — no manual logging required.
What goes into the score
The score is built from four signals pulled from Apple Health:
- Steps — your movement and overall activity for the day.
- Sleep — how much rest you actually got, the foundation everything else sits on.
- Heart rate variability (HRV) — a sensitive marker of recovery and stress; higher generally means better recovered.
- Resting heart rate — a steady baseline that tends to drop as your fitness and recovery improve.
Together these balance what you did (activity) against how well you recovered (sleep, HRV, resting heart rate) — which is why a hard workout on no sleep doesn't automatically mean a great day.
How to read your score
The exact number matters less than the direction. A high score is a green light to push; a lower one is a nudge to prioritize rest. Sanna tells you which signal moved the score most, so "74 today" comes with a reason — "short sleep pulled it down" — not just a verdict. Over time, weekly trends, streaks, and percentile rankings show how today compares to your own history.
Private by design
Because Sanna is Secure AI's health app, the score follows the same principle: your health data never leaves your device — Apple Health data is processed locally on your phone. You get the insight without shipping your medical details anywhere. It's the same instinct behind Secure AI, where your identity is stripped before any request reaches an AI provider.
See your score tomorrow morning
Connect Apple Health and Sanna gives you a 0–100 score every morning, with an AI coach to turn it into action — and your health data stays on your device.
Sanna is a wellness and accountability tool, not a medical device, and its score is not medical advice. Talk to a healthcare professional about any health concerns.