Built around the flow of a real sauna session
Heat up, cool down, look back later. Your app data is stored on your devices and syncs through your private iCloud account.
Nothing to remember, nothing to hold
Pick Finnish Classic or Evening Wind-Down and let the app carry you through every round with gentle chimes, haptics, and hydration cues.
- Two guided rituals: Finnish Classic and Evening Wind-Down
- Customize rounds and timing to fit your own pace
- Chimes and haptics guide you, so you never reach for the phone
- Start from your iPhone, Apple Watch, or with Siri
- Every ritual saved to history with phase breakdowns, plus new achievements
Sound that sets the evening
Choose from 17 ambient themes mastered for sauna acoustics, including Wood-Fired, or build your own from your recordings: an ambient loop, a round loop, and the cues that open and close each round. Prefer your own music? Silent Mode keeps the cues and leaves the sound to you.
- Add MP3, M4A, WAV, AIFF or FLAC files and set each sound's volume
- Send a theme to a friend as a file, or open one they send you
Lights dim as you walk in
Start a session and let Apple Home (HomeKit) dim lights, run fans, and trigger scenes around the sauna. If you use HomeKit climate sensors, live temperature and humidity can appear during the session too. A Saunum LEIL heater on your Wi-Fi can show cabin temperature and heater status as well.
Finish cold, leave calm
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 your sauna rounds.
- Standalone plunges or paired sauna + cold plunge sessions
- Log water temperature and track heart-rate recovery
- Cold plunges on Apple Watch — start, pause, and finish from your wrist
- Plunge timer stays on the Lock Screen and Dynamic Island
A sauna that's always looked after
Track stove maintenance, stone replacements, wood treatments, and cleaning schedules in one private journal. Know exactly when your sauna last had attention and when it needs it next.
- Log maintenance dates, work done, and notes
- Keep separate records for multiple sauna profiles
- Private streaks and milestones that stay motivating
- Share session cards only when you want to
How Sauna Assistant compares
A phone timer counts down and stops there. Recovery trackers want an account and a subscription. Sauna Assistant guides the whole ritual.
| Feature | Phone timers | Recovery trackers | Sauna Assistant |
|---|---|---|---|
| Guided sauna rounds | ✗ | ✗ | ✓ |
| Hands-free Guided Rituals | ✗ | ✗ | ✓ |
| Phone stays outside | ✗ | Limited | ✓ |
| Apple Watch control | ✗ | Limited | ✓ |
| Live heart rate during rounds | ✗ | Workout-focused | ✓ |
| Cold plunge & contrast therapy | ✗ | Workout-focused | ✓ |
| Apple Home lights, fans & scenes | ✗ | ✗ | ✓ |
| Climate sensor readouts | ✗ | ✗ | ✓ |
| Private session history and streaks | ✗ | Partial | ✓ |
| Sauna maintenance journal | ✗ | ✗ | ✓ |
| Pricing model | Usually free | Usually subscription | $19.99 once |
| Privacy model | Varies | Account-based | No account or app tracking |
Comparison reflects typical apps in each category as of 2026. Individual products vary.
Questions from home sauna owners
What people usually want to know before they buy once and keep it.
Is this a subscription or one-time purchase?
$19.99. Once. Forever. No recurring fees, no hidden costs. Buy once and enjoy all current and future features forever. We believe in simple, honest pricing.
Do I need to bring my phone into the sauna?
No. Your phone connects to your sauna's multimedia system (Bluetooth/AirPlay) and controls HomeKit lights wirelessly, so it can conveniently stay outside. With the Apple Watch companion, you can start, pause, resume, and end sessions — and monitor your heart rate — directly from your wrist. You can also control your session via Live Activities on your Mac or iPad.
Is my data private and secure?
Yes. Your sessions are yours alone. Sauna Assistant requires no account. Your session history, streaks, and settings are stored on your devices and sync through your private iCloud account. The app has no developer analytics or tracking.
What if I want to use my own music?
Sauna Assistant includes 17 ambient sound themes mastered for sauna acoustics, and we add new themes with app updates. You can also build your own theme from your own recordings, or use Silent Mode so you can bring your own music or enjoy peaceful quiet. You still get intelligent round timing, smart home controls, and session tracking—just without our audio themes.
Guides for better home sauna sessions
Practical reading on setup, safety, ritual, and getting more from the room you already own.
How to track time in sauna
Seven ways to time a sauna session safely, from the classic hourglass to your Apple Watch.
Read the time-tracking guideApple Watch in the sauna
What Apple's 35°C limit means for your Watch, and how to time rounds without wearing it into the heat.
Read the Apple Watch guideIdeal sauna humidity levels
Why the same temperature feels mild at 10% humidity and brutal at 60%, with an interactive chart to find your range.
Read the humidity guideBring the ritual home
Less than one spa visit: $19.99, once, with every future update included. No subscription, no account.
Lifetime access. No subscription. Apple's standard refund policy applies.