Everything you need to get started with SaunaMind and make the most of every session.
SaunaMind helps you track training, sauna, cold exposure, hydration, and recovery as one connected wellness session. Instead of relying only on the clock, SaunaMind uses available heart-rate and session data to show wellness estimates such as Sauna Load, heat zones, cold recovery, training zones, hydration context, and readiness.
The zone system is informed by general sauna and exercise research, but it is not a medical measurement. SaunaMind estimates your session context; it does not confirm that any specific biological outcome is occurring.
SaunaMind is currently in TestFlight. Join the waitlist and you'll get an early-access invite when founding-member spots open.
Select your primary sauna: Traditional/Finnish, Infrared, or Steam. This helps calibrate the estimation model because different sauna types can produce different heart-rate and heat-comfort responses.
Tell us what you're after — cardiovascular health, recovery, longevity, stress relief, or general wellness. This helps the AI coach surface relevant general educational content. The coach does not provide personalised medical advice.
For richer session context, pair a Bluetooth heart-rate strap (Polar, Wahoo, Garmin, CooSpo, or any standard HR monitor). Without one, SaunaMind can still log the session with the data you enter.
SaunaMind turns available heart-rate and session data into a 0-100 Sauna Load score and simple heat-zone labels. These are proprietary wellness estimates, not clinical measurements.
heart-rate effort + time in zone = Sauna Load Consumer wellness score, not a medical reading Traditional, infrared, and steam saunas can feel different, so your sauna preference helps the app present the session in the right context.
Heart-rate responses vary based on hydration, fitness, acclimatisation, caffeine, medication, and environmental conditions. SaunaMind is not a medical device and should not be used for medical decisions.
Two people in the same sauna for the same duration can show very different heart-rate responses. Fitness level, hydration, acclimatisation, and body composition all affect heat tolerance. SaunaMind estimates your session response instead of relying only on elapsed time.
The intended session flow starts from the Session tab. SaunaMind is being designed around three session phases:
You can use any combination of these phases in a single session.
The main screen shows Sauna Load, active heat zone, heart rate, hydration context, and elapsed time. If you leave the app, your session continues in the background and picks up where you left off.
Every session is saved automatically. The History tab shows all past sessions with filters for sauna, cold plunge, contrast (sauna + cold), and training sessions. Tap any session for a detailed view including session metrics, zone context, hydration, and recovery information.
SaunaMind maps heat-session effort to five research-informed wellness zones. The descriptions below summarise general sauna and heat-adaptation context; they are not claims that SaunaMind measures, delivers, or verifies any biological outcome.
SaunaMind is a general wellness application. It is not intended to diagnose, treat, cure, prevent, or monitor any disease or medical condition. If you feel unwell, exit the sauna and seek appropriate help.
A low estimated heat-response range. Sauna physiology reviews describe thermoregulatory changes such as increased skin blood flow during heat exposure, but SaunaMind does not measure vasodilation or verify any clinical outcome.
A sustained baseline range. Heat-acclimation literature discusses progressive cardiovascular and thermoregulatory adaptation over repeated exposure; SaunaMind shows an estimated session zone, not confirmed adaptation.
A higher estimated heat-response range. Cellular stress-response pathways are discussed in heat-adaptation research, but SaunaMind does not measure heat shock proteins or confirm cellular changes.
A high estimated heat-response range. Research describes associations between heat stress and multiple biological pathways; individual responses vary and the app reports only an estimated wellness zone.
A safety-focused high estimate. Exit the sauna, cool down, and seek medical help if you feel faint, confused, short of breath, or unwell.
SaunaMind is being designed around the idea that heat and cold can belong in one recovery session. Every plunge, shower, ice bath, or cryo session can be logged with heart-rate context, and contrast sessions are saved as a single connected flow with round-by-round data.
Cold exposure often follows a recognisable pattern. SaunaMind maps your session to three observational phases using live heart-rate data when available:
During the Recovery phase, SaunaMind can calculate RMSSD — the root mean square of successive differences between heartbeats — from a BLE chest strap's beat-to-beat data. Shaffer & Ginsberg (2017) describe RMSSD as a short-window HRV measure associated with parasympathetic activity. In SaunaMind, RMSSD is a wellness estimate of recovery, not a clinical HRV assessment.
Hot-cold cycling is tracked as a single contrast session with round counts. Each round logs entry HR, exit HR, cold recovery percentage, and time in each modality. Research on contrast formats in sports recovery literature describes mixed results — the app presents your data observationally rather than prescriptively.
This is general wellness information. Consult your doctor for personal health guidance.
SaunaMind works with any Bluetooth Low Energy heart rate monitor that uses the standard Heart Rate Service. Tested and verified devices include:
Wet the sensor pads, put on your strap, then open SaunaMind. The app scans for nearby HR monitors automatically. Tap your device in the list to connect. Once paired, it reconnects automatically in future sessions.
Connect your Oura Ring via the Profile tab for daily readiness metrics, sleep data, and HRV tracking. Oura session HR data is also used to backfill heart rate for sessions where a BLE strap wasn't available.
SaunaMind offers three annual subscription tiers. No feature gates — every tier gets every feature. Early supporters pay less and keep that price for life.
See the pricing section on the homepage for current details.
SaunaMind is pre-launch and not yet taking payments. Once early access opens, subscriptions will be managed through the App Store — cancellable or adjustable at any time from iPhone Settings > Subscriptions.
Still need help? Contact our support team
SaunaMind is in TestFlight now. Join the waitlist to hear first when founding-member access opens — $19.99/yr for the first 1,000 members while the subscription remains continuously active.
Join the WaitlistSaunaMind is a general wellness and fitness application. It does not provide medical advice, diagnosis, treatment, prevention, or monitoring of any disease or medical condition.
Sauna Load, heat zones, recovery scores, hydration prompts, and related metrics are proprietary wellness estimates based on available sensor data. They are not clinical measurements and should not be used for medical decision-making.
Heat and cold exposure carry real risks. Always consult a qualified healthcare professional before beginning sauna, cold plunge, or contrast therapy — especially if you have cardiovascular conditions, are pregnant, are taking medication, or have any pre-existing medical condition.