Heat & Cold Therapy, Measured.

Track your sauna, steam, and cold plunge sessions with real-time biometrics, HCEI effectiveness scoring, and AI-powered recovery insights.

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5 Exposure Types
Live HR & SpO2
HCEI Scoring
AI Coaching

Inside the App

SaunaTracker Pro dashboard showing active Watch session, goals, streaks, and exposure tracking
Dashboard
Goals, streaks, and session history
SaunaTracker Pro live session view showing sauna timer, HCEI score, heart rate, blood oxygen, and calorie tracking
Live Session
Real-time HR, SpO2, and HCEI scoring
SaunaTracker Pro on Apple Watch showing exposure wheel with sauna, steam room, cold plunge, cold shower, and relax zone
Apple Watch
Wrist-based session control

Built for Serious Practice

Everything you need to track, measure, and optimize your therapy.

HCEI Scoring

Proprietary 0-100 effectiveness score combining duration, HRV, heart rate reactivity, transitions, and safety.

Live Heart Rate & SpO2

Stream real-time heart rate and blood oxygen from your Apple Watch during every session.

Multi-Phase Sessions

Seamlessly transition between sauna, steam, cold plunge, cold shower, and relax within one session.

HRV Recovery Analysis

Tiered confidence HRV tracking shows how each session impacts your autonomic recovery.

AI Coaching

Personalized post-session analysis and weekly wellness summaries powered by AI.

Apple Watch Integration

Watch-as-Authority architecture for live biometrics. Or use Light Mode with just your iPhone.

See all 22 features →

How It Works

Three steps to better heat and cold therapy.

Start a Session

Choose your exposure type and start the timer from your Apple Watch or iPhone.

Track Your Metrics

Live heart rate, SpO2, and HCEI scoring on your wrist. Seamlessly switch between phases.

Optimize Your Practice

Get HRV recovery insights, AI coaching, and track streaks to improve over time.

Free & Pro

Start tracking for free. Upgrade for deeper insights.

Free
Always free
  • Session tracking & timers
  • Live heart rate from Watch
  • Basic HCEI scores
  • Multi-phase sessions
  • Home & Lock Screen widgets
Pro
Everything in Free, plus:
  • AI per-workout coaching
  • Weekly AI wellness summaries
  • Detailed HCEI breakdowns
  • Full HRV recovery analysis
  • Advanced goal customization

Ready to Track Smarter?

Learn how SaunaTracker Pro measures heat and cold therapy sessions.

Explore Features