Sauna Metrics · iPhone & Apple Watch

Your sauna on
Apple Watch.

The Workout app has no sauna. Here is what that means for your data, and how Sauna Metrics turns the watch into a sauna timer with live heart rate.

Download on the App Store

5.0App Store

100% Phone-Free

Leave your iPhone chilling in the locker. Start, lap and save your entire session right from your wrist.

Live Pulse & Nudge

Real-time heart rate on your wrist. A friendly vibration taps you if you push past your comfort zone.

Sweat-Proof Lock

Lock the touch screen against rogue sweat drops and count your water intake with one easy tap.

Clean Health Sync

Logged straight into Apple Health as Preparation & Recovery with active calories, heart rate and HRV.

Apple Watch Series · SE · Ultra

Five smart screens for the hot room.

Big readable numbers, zero clutter, and gentle haptic taps so you can relax without squinting.

Why there is no sauna workout

Apple's Workout app lists dozens of activities, but not the sauna. The usual workaround is to start "Other" or "Mind and Body": it records your heart rate, but knows nothing about rounds, breaks, temperature or cooling down. You end up with one long, flat workout that mixes the heat with the time spent outside.

In Apple Health

Health has no sauna category, so the watch saves the session as a Preparation and Recovery workout, the closest honest match, with your heart rate and active energy. On iPhone, the app keeps what Health cannot store: rounds, temperature, humidity, sauna type, the score out of 100 and the body estimates.

Questions

Can Apple Watch track a sauna session?

Not with a sauna workout: the Workout app has none. A dedicated app like Sauna Metrics times your rounds and breaks, records your heart rate, and saves the session to Apple Health as a Preparation and Recovery workout.

Can I wear my Apple Watch in the sauna?

Apple rates the watch for ambient temperatures up to 35 °C, well below sauna heat. Short rounds are common, but if the watch gets hot, take it off and follow the session on your iPhone.

Is the Apple Watch app free?

The download is free. The Apple Watch app is part of Sauna Metrics Pro, with a free week to try, then a monthly or yearly subscription or a one-time purchase.

Turn every session
into data.

Free to download. No account, no ads, no tracking — your sessions stay on your iPhone.

Free to download. Sauna Metrics Pro adds the Apple Watch app, the Health analyses, the training log and the recaps, with a free week to try. No account and no ads.

Download on the App Store Mac App Store