Sauna Metrics: Tracker & Log

Sauna Metrics turns every sauna session into data you can learn from. Time your rounds, log temperature, humidity and how you feel, then see what heat actually does to your sleep, heart rate and recovery. ON YOUR WRIST • Start a session from Apple Watch and follow your heart rate live • Get an alert if your heart rate climbs too high • A 10-minute afterglow countdown when you step out of the heat • Sessions go to your iPhone and to Apple Health EVERY SESSION • Round-by-round timer with a Live Activity, widgets and a Control Center control • Temperature, humidity, sauna type, cold plunge, sauna hat and water • Mood and stress before and after, calories and sweat loss • A session score that shows what made it a good one WHAT YOU LEARN • How heat shapes your sleep and heart, from Apple Health • HRV and resting heart rate trends • A 30-day experiment: follow a protocol you choose and compare your HRV, resting heart rate, blood pressure and sleep with the 30 days before • Levels, streaks, monthly challenges, guided programs and badges • Short, sourced reads on heat, hydration, sleep and safety SAUNA METRICS The Apple Watch app, HRV and sleep analysis, electrolyte guidance, the biometrics dashboard, JSON export and export to an AI chat. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://saunametrics.app/privacy/ Your data stays on your iPhone. No account, no ads, no tracking. Heart rate is a guide, not a medical measurement. Ask your doctor before using the sauna if you have a heart condition.