Quantify Your
Sauna Wellness
Track heart rate with Apple Watch.
Record sauna, cold bath, and rest phases.
Visualize your wellness with the Totonoi Score.
Features
Make your sauna experience more enjoyable and scientific.
Apple Watch Integration
Start sessions with one tap from your wrist. Real-time heart rate monitoring.
Heart Rate Monitoring
Track heart rate rise in sauna, rapid drop in cold bath, and stabilization during rest.
3-Phase Recording
Easily switch between sauna → cold bath → rest phases.
Totonoi Score
Calculate your wellness score from heart rate patterns using our unique algorithm.
History & Statistics
Review past sessions and discover your optimal wellness pattern.
HealthKit Integration
Record as workouts and integrate with Apple Health.
How It Works
Record your wellness in 3 simple steps
Start Session
Begin a session from Apple Watch or iPhone
Switch Phases
Tap to switch between sauna → cold bath → rest
Check Results
View your Totonoi Score after the session
FAQ
Is Apple Watch required?
Apple Watch is required for heart rate monitoring. You can record time with iPhone only, but heart rate data is needed for Totonoi Score calculation.
Is it safe to use Apple Watch in the sauna?
Apple Watch operating temperature is 0-35°C. Using it in saunas (80-100°C) is outside Apple's recommended range. Please use at your own discretion.
Is there a fee?
Basic features are available for free.
Where is my data stored?
All data is stored locally on your device and is not sent to external servers.