sauna sauna sauna! times your sauna rounds on your wrist. Pick the heat, get a suggested time, and follow each round with your heart rate in colour. It warns you when your time is up or your pulse runs high, and shows how fast your heart recovers in the rest. No phone, no fuss: made for a hot room, with big numbers and a few buttons. FEATURES - Set the temperature from 50 to 110 °C (120 to 230 °F, following your watch units); the flame and the ring grow with the heat - Suggested time for the temperature. It is a general guide: you can set your own time from 5 to 30 minutes - Remembers your last temperature and time for the next session - Sauna and rest rounds: switch with one button, with a 5-minute rest ring in blue - Live heart rate with a beating heart, coloured by effort (green, gold, red), plus the session average and maximum - Heart-rate alert: a vibration when your pulse stays at 90% of your maximum heart rate or more during the sauna - Heart-rate recovery: after 1 minute of rest, see how many beats per minute your heart dropped since the end of the sauna - Vibration and a flashing red ring when your time is up, and a short vibration at the end of the rest - Silent: alerts only vibrate, perfect for a quiet sauna - Records an activity named "Sauna 90 °C" with each sauna and rest saved as a lap, with your heart rate (sessions under 30 seconds are not saved) - Summary at the end: total time, number of rounds and sauna time, average and maximum heart rate, best recovery and your sessions this week - The screen goes dark after 30 seconds without a button press to save battery; any button wakes it, and it lights up for every alert - Current time always on screen - 29 languages CONTROLS Watches with buttons: START = start, pause or resume. UP/DOWN = change the temperature. Hold UP = change the time instead (press START or BACK to go back). During a session, BACK = switch between sauna and rest. In pause, BACK = stop and save. Touch watches without UP/DOWN: tap the upper (+) or lower (-) part of the screen to change the temperature, the very bottom to change the time. The touch screen is otherwise ignored, so a tap never starts or pauses a session. HEALTH NOTICE The suggested times and the heart-rate alert are general guidance, not medical advice. Wrist heart rate can be less accurate in the heat. Listen to your body, drink water and leave the sauna if you feel unwell. If you have a heart or blood pressure condition, are pregnant or take medication, ask your doctor first. QUICK FAQ Is it free? Yes. Does it need my phone or internet? No. It works on the watch alone and does not send your data anywhere. It asks for three permissions: Fit, to record the activity; Sensor, to read your heart rate; User Profile, to read your maximum heart rate for the alert. How is the alert level set? 90% of the maximum heart rate in your Garmin profile, or 220 minus your age if it is not set. Why is there no recovery after my rest? It needs your heart rate when you leave the sauna and again after 1 minute of rest. If the sensor gives no value at that moment, nothing is shown rather than a wrong number. What happens when the screen is dark? The session keeps running; the app must stay open. Press any button to see it again. IN ACTIVE DEVELOPMENT I work on sauna sauna sauna! every day and new versions come often. Your feedback shapes the next ones: tell me what you like, what is missing, or what does not work on your watch (with your watch model) at [email protected]. I read every message. SUPPORT THE APP sauna sauna sauna! is free. If it helps in your routine, you can buy me a coffee: https://buymeacoffee.com/jayontrack

New: heart-rate alert (vibration at 90% of your max), heart-rate recovery after each sauna, heart rate coloured by effort with average and max on screen, the app remembers your last temperature and time, and your sessions this week in the summary. Cleaner session screen (stress and Body Battery removed). Touch watches fixed: a tap no longer starts or pauses a session. More precise heart rate, and alerts keep the screen on long enough to read. The app is in active development: send me your ideas and problems at [email protected].