Your whole session, completely hands-free
Pick Finnish Classic or Evening Wind-Down and the app carries you through every round with gentle chimes, haptics, and hydration cues. You never have to touch a screen.
Two rituals to start
Finnish Classic for the traditional heat-and-rest rhythm, Evening Wind-Down for lower heat and gentler rounds.
Make it yours
Customize a ritual's rounds and timing to fit your own pace.
Chimes, haptics, and hydration cues
The app marks every phase for you, so the phone and the watch stay out of your hands.
Start from Apple Watch or Siri
Begin a ritual from your wrist or with a voice command before you even open the door.
Tracked like everything else
Finished rituals land in your private history with phase breakdowns, plus new achievements to unlock.
Guided soundscapes for every round
Choose from 17 ambient sound themes mastered for sauna acoustics, plus Silent Mode. Each sound theme pairs calm background audio with cues that mark the rounds, so it never feels like a workout timer.
Continuous ambiance
Ambient sound runs through the whole session, breaks included
Round-specific audio
Each heating round gets its own soundscape
Soft transitions
Tracks crossfade into each other, so nothing cuts off abruptly
Separate volume controls
Mix ambient and round audio levels to taste
AirPlay and Bluetooth
Plays through whatever speakers your sauna already has
Apple Home scenes for the whole room
Connect Apple Home (HomeKit) scenes, live climate readings, and automation hooks to each stage of the session.
Scenes for six session events
Trigger HomeKit scenes on session start, pause, resume, and stop, plus round start and stop.
Temperature and humidity
Live readings from HomeKit climate sensors, with calibration offsets if yours runs hot.
Reliable connections
If HomeKit drops mid-session, Sauna Assistant reconnects and catches your scenes up.
Climate saved per round
Every round records temperature and humidity, so you can find the settings you keep returning to.
Siri voice control
"Hey Siri, start my sauna session" — hands-free control via App Intents.
Round control that stays out of the way
Set up a quick refresh or a longer ritual. Rounds and countdowns flex to match, and the controls stay out of your way.
Custom durations
Set heating rounds from 1 to 60 minutes.
Quick presets and steppers
Tap a preset for common times, or hold the stepper instead of tapping it over and over.
Preparation countdowns
Give yourself up to 120 seconds to settle in before each round starts.
Dynamic Island & Live Activities
The timer and controls stay on your Lock Screen while the app is closed.
Full Apple Watch app
A complete companion on your wrist, plus Live Activities on Mac and iPad.
Background notifications
Round alerts come through even while your device stays locked.
Theme switching
Change the soundscape mid-session without losing timer progress.
Keep the phone outside
Start, pause, resume, and finish from Apple Watch, see heart rate live, and keep your iPhone safely out of the heat. Wondering if the watch can take it? Read our guide on using Apple Watch in the sauna.
Full session control
Start, pause, resume, and end sessions from your wrist while the phone stays outside.
Live heart rate
Watch your heart rate through every round, right on the session screen.
Automatic sync
Rounds and session data land back on your iPhone without you doing anything.
Built for glances
Big timing, clear controls, and rest-period guidance you can read without squinting.
Now with cold plunge
Pair the heat with the cold. Start a plunge in one tap, log water temperature, and track your heart-rate recovery — on its own or paired with sauna rounds.
Standalone or paired sessions
Run a plunge on its own or pair it with your sauna rounds.
Water temperature and recovery
Log water temperature and track your heart-rate recovery after every plunge.
Cold plunges on Apple Watch
Start, pause, and finish a plunge right from your wrist, just like a sauna session.
Dynamic Island & Live Activities
The plunge timer and recovery details stay on your Lock Screen and Dynamic Island while the app is closed.
Private history that stays useful
Afterward, review rounds, heart rate, streaks, and achievements, with optional Apple Health sync. None of it leaves your devices.
Apple Health sync
Logs your rounds as Mindful Minutes, if you turn it on.
Charts and trends
Monthly bar charts for frequency, plus line charts for duration, temperature, and humidity over time.
Achievements and streaks
15+ unlockable achievements and weekly consistency tracking.
Session cards
Every round is recorded automatically, with room for your own notes.
A maintenance journal for the room itself
Track stone replacements, heater checks, cleaning, and costs in one place so the room itself gets the same attention as the ritual.
Stone replacements
Log replacements and see when the stones are due again.
Heater checks
Keep element checks and service dates where you can find them.
Cost tracking
Track service costs and equipment spending over the life of the room.
Per-sauna journals
Keep separate records for each sauna profile.
Built for consistency
15+ unlockable achievements
Weekly streak milestones
Celebration overlays for progress
Built for iPhone and Apple Watch
Ready for real rooms
Multi-sauna profile support
Categorized maintenance icons
Maintenance cost tracking
Heater and stone replacement logs
Apple-native design
Dark Mode throughout
Full VoiceOver and accessibility labels
Customizable countdown sounds
Celsius and Fahrenheit preferences
Private by default
No account, no app tracking, no ads. Your sessions are stored on your devices and sync through your private iCloud account.
No account required
Use every feature immediately. There's no sign-up, no email collection, and no password to manage.
Stored on your devices
History and settings are stored locally and sync through your private iCloud account.
No app analytics
The app does not collect usage data or track what you do. Your session data is not sent to us.
Questions about the details
The numbers and limits people ask about before buying.
What are Guided Rituals?
Complete, hands-free sauna sessions. Pick Finnish Classic or Evening Wind-Down and the app carries you through every round with gentle chimes, haptics, and hydration cues. Each ritual can be customized to fit your pace. Start one from your iPhone, Apple Watch, or with Siri, and every finished ritual lands in your history with phase breakdowns.
Which HomeKit events can I trigger?
Sauna Assistant offers hooks for 6 distinct events: Session Start, Round Start, Round Stop, Session Pause, Session Resume, and Session Stop. This allows for complex setups like dimming lights for heat and brightening them for cool-downs automatically.
What analytics are included?
The history tab includes monthly session bar charts, session duration trends, individual round performance, and historical charts for both temperature and humidity over time.
Does it support Siri?
Yes. We support App Intents, so you can say "Hey Siri, start my sauna session", start a Guided Ritual by voice, or use Siri Suggestions for your favorite audio themes.
How many achievements are there?
There are 15+ unlockable achievements, and updates keep adding more. They cover session count, total heat time, theme exploration, Guided Rituals, and consistency streaks.
What are the round limits?
You can configure rounds from 1 to 60 minutes and preparation countdowns from 0 to 120 seconds. There is no limit to the number of rounds you can perform in a single session.
What is the Maintenance Journal?
It's a dedicated tool to track the "health" of your equipment. Log stone replacements, heater element checks, cleaning, and track costs to manage your sauna investment across multiple profiles.
How does the Apple Watch companion work?
The Apple Watch companion app lets you start, pause, resume, and end sauna sessions directly from your wrist — no phone needed. You'll also see live heart rate during every round. Sessions and rounds sync back to your iPhone automatically.
Can I track cold plunges?
Yes. Start a cold plunge in one tap, log the water temperature, and track your heart-rate recovery. Run plunges on their own or pair them with sauna rounds for a full contrast therapy ritual. Cold plunges work on Apple Watch too, and the plunge timer stays on your Lock Screen and Dynamic Island.
Bring the ritual home
Every feature on this page for a single $19.99 purchase. Nothing renews and nothing unlocks later.
$19.99 once • No subscription
iOS 18.0+ | iPhone, iPad, Mac & Apple Watch