# Sauna Metrics: Tracker & Log — Timer, HRV & sleep insights

> Timer, HRV & sleep insights (iPhone/iPad app by Philippe Barradas.)

- Source: https://appshunter.io/ios/app/sauna-metrics-tracker-and-log/id6765696636 (this page in markdown: same URL + `.md`)
- Developer: [Philippe Barradas](https://appshunter.io/developer/1896040912)
- Category: Health & Fitness, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 26.0 · 24 MB
- Languages: American English, Czech, Danish, Dutch, Estonian, Finnish, French (France), German (Germany), Italian, Japanese and 10 more
- Released: 2026-05-06
- Data updated: 2026-10-12

## What is Sauna Metrics?

Sauna Metrics turns every sauna session into data you can learn from.

Time your rounds, log temperature, humidity and how you feel, then see what heat actually does to your sleep, heart rate and recovery.

ON YOUR WRIST
• Start a session from Apple Watch and follow your heart rate live
• Get an alert if your heart rate climbs too high
• A 10-minute afterglow countdown when you step out of the heat
• Sessions go to your iPhone and to Apple Health

EVERY SESSION
• Round-by-round timer with a Live Activity, widgets and a Control Center control
• Temperature, humidity, sauna type, cold plunge, sauna hat and water
• Mood and stress before and after, calories and sweat loss
• A session score that shows what made it a good one

WHAT YOU LEARN
• How heat shapes your sleep and heart, from Apple Health
• HRV and resting heart rate trends
• A 30-day experiment: follow a protocol you choose and compare your HRV, resting heart rate, blood pressure and sleep with the 30 days before
• Levels, streaks, monthly challenges, guided programs and badges
• Short, sourced reads on heat, hydration, sleep and safety

SAUNA METRICS
The Apple Watch app, HRV and sleep analysis, electrolyte guidance, the biometrics dashboard, JSON export and export to an AI chat.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://saunametrics.app/privacy/

Your data stays on your iPhone. No account, no ads, no tracking.

Heart rate is a guide, not a medical measurement. Ask your doctor before using the sauna if you have a heart condition.

## Is Sauna Metrics safe?

Not enough ratings yet to assess Sauna Metrics.

## Is Sauna Metrics legit?

Sauna Metrics: Tracker & Log has limited verification signals. The AppsHunter Legitimacy Score for Sauna Metrics is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.8.1 — 2026-10-10

Updated App Store screenshots and clearer presentation of the sauna timer, session journal and sleep comparisons.

### 1.8.0 — 2026-10-05

What's new in 1.8.0:

• Apple Watch: start a session from your wrist, follow your heart rate live, get an alert if it climbs too high, and a 10-minute afterglow when you step out.
• A new look built from iOS's own controls, with Liquid Glass.
• Progress tab: levels, streaks, monthly challenges, guided programs, badges and short sourced reads.
• 30-day experiment: pick a protocol and compare your HRV, resting heart rate, blood pressure and sleep with the 30 days before.
• Start a session from Control Center, ask Siri for your weekly benefit, and minimize a live session to the tab bar.

### 1.7.1 — 2026-09-26

What's new in 1.7.1:

• Languages — every screen has been re-read in all 11 languages. Around 1,550 strings were corrected: words translated as the wrong part of speech, sauna vocabulary that did not match how each country actually talks about it, and labels that had never been translated at all.
• Share card — the card you share after a session now says where to find the app.

### 1.7.0 — 2026-09-15

What's new in 1.7:

• Session rewards — every logged session now ends on a card with your score, what you just beat and any badge it unlocked.
• Badges — 28 achievements across volume, heat time, streaks, recovery, protocol and consistency. They reward habits, never intensity: nothing unlocks by turning the heat up or staying in longer.
• Adaptation level — a long-horizon ladder from Cold Start to Incandescent that never resets, so there is always something to climb after a quiet week.
• Live Activities — an in-progress session on the Lock Screen and Dynamic Island, with the round and elapsed time.
• Reminders — optional nudges when your adaptation is fading, when a streak is on the line, or when the week is short of your target. Scheduled on your device; nothing leaves your phone.
• The whole app now speaks all 11 supported languages, including the new rewards.
• Home screen rebuilt: your level and progress up top, and the activity map now shows 18 weeks instead of 12.

Thanks for using Sauna Metrics! If you enjoy the app, please leave a review.

### 1.6 — 2026-06-29

What's new in 1.6:

• Tappable protocol badges — tap any protocol to open a quick info sheet that explains it.
• Full VoiceOver support — refined accessibility labels make the app easier to use with screen readers.
• Smarter session defaults that remember how you like to train.
• Refreshed gradient icons and visual polish throughout.
• Fixed onboarding so your body profile and protocol settings are saved correctly.

Thanks for using Sauna Metrics! If you enjoy the app, please leave a review.

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## Related topics

[sauna logic 2](https://appshunter.io/ios/topics/sauna-logic-2)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-12.*