Sauna Cycle
The art of thermal contrast, in your pocket. Sauna Cycle guides your sauna and cold plunge sessions through heat, cold and rest phases, then tracks how your body adapts week after week.
Your session, guided
From the first round of heat to the last minute of rest, Sauna Cycle keeps the rhythm so you can stay present.
Guided Cycles
Heat, cold and rest phases with clear timers. Follow your protocol without watching the clock.
Thermal Adaptation Score
A 0–100 score built from your consistency, cold tolerance and session discipline — watch it grow over weeks.
Apple Health, Optional
Connect Apple Health to log heart rate and HRV alongside your sessions. The app works fully without it.
Haptic Transitions
Discreet haptic cues mark the end of each phase — no need to stare at a screen between heat and cold.
Trends & Streaks
Weekly charts of your sessions, exposure time and score, plus streaks to keep the habit alive.
Total Privacy
No ads, no account, no tracking. Your sessions and health data stay on your device. Always.
Thermal contrast, done right
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Protocols that fit you
Adjust heat, cold and rest durations and the number of rounds — from a gentle first session to a full Nordic cycle.
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Discover places to practice
A curated selection of saunas and cold plunge spots, each with a suggested on-site ritual. Details are indicative — always check with the venue.
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Honest by design
Educational guidance, not medical advice. No miracle claims — just a clean tool to structure a demanding practice.
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Crafted by DIH LABS
Built by our non-profit association dedicated to useful, ethical, ad-free digital tools.
Heat. Cold. Rest. Repeat.
Download Sauna Cycle for free and give your thermal practice the structure it deserves.