Now in private beta

Health insights,
no subscription
needed.

Sanna turns your health data into a single daily readiness score and explains it. All processing happens on-device. Integrates directly with Apple Health on your iPhone.

Unlike most health apps, Sanna runs entirely on your iPhone. No cloud processing, no tracking, no creepy data collection. Your health data never leaves your device.

  • On-device

    0 bytes uploaded

  • Subscription

    Optional

  • Hardware

    Device you have

9:41
readiness-value
Readiness78Primed
vs. 14-day avg6
Recovery4
82/ 100
Sleep3
71/ 100
Stress load8
34/ 100

14-day readiness

Trend is climbing - keep weekly mileage stable.

Average

72

sparkline
2 weeks agoToday

Vitals

Resting HR

52bpm

baseline 54

HRV (rMSSD)

68ms

baseline 61

Respiratory rate

14.2br/min

baseline 14

SpO₂

97%

baseline 97

Skin temp.

35.7°C

baseline 35.9

VO₂ max

48ml/kg

baseline 47

On-device insights

Lower training load today

Your HRV is 11% above baseline but sleep efficiency dropped two nights in a row. A Zone 2 day will keep you trending up.

Stress recovered well after 18:00

Two short peaks during meetings, fully cleared by your evening walk. Pattern matches the last 6 Wednesdays.

Sleep onset slower on screen-late nights

On nights with >40 min of late blue light, you take 14 min longer to fall asleep on average.

Sanna · model v3.2 · processed locally