Focused features to help you build a consistent sauna habit.
One tap to begin. No setup, no settings.
Live BPM on your wrist with haptic alerts at your threshold.
Peer-reviewed formulas tuned for passive heat, not generic exercise math.
Track streaks and session history. Watch your consistency grow.
Sessions save to HealthKit automatically with your other health data.
No accounts. No cloud. No tracking. Everything stays on device.
The companion app syncs automatically with your Apple Watch. Track your progress, view session history, and monitor your sauna habit over time.

Weekly stats, intensity trends, and consistency tracking at a glance

Complete log of every session with duration and heart rate data
Four steps. That's all it takes.
One tap begins your session—no configuration needed.
See your time, heart rate, and calories update in real-time.
Finish your session and see your complete stats summary.
Track your consistency and watch your habit grow.