SUNA - Sauna Tracker

Jan Kriz Health & Fitness iPhoneiPadiPod touchApple Watch

SUNA - Sauna Tracker is a free Health & Fitness app for iPhone and iPad by Jan Kriz. Rated 1.0/5 from 2 ratings. Requires iOS 17.6. Updated October 15, 2026.

Rating: 1.0; 2 ratings
Price: Free; on the App Store
Size: 25 MB; Age 4+
Updated: Oct 15; 2026 · v7.0

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About SUNA - Sauna Tracker

SUNA Sauna as a ritual. Start on Apple Watch. Move through heat, cooling and rest. Come back to iPhone when you want the full story. On Apple Watch • Start with a tap or the Digital Crown • Stay with the three phases — no phone in the cabin • Optional haptics during heat • See the planned ritual before you begin On iPhone • This week's rhythm, time and rounds • Each ritual: duration, phases, Sauna Score, heart rate when Watch data is there • Compare with your own average • Notes, plans, reminders • Journey: levels and milestones SUNA is for presence and rhythm, not performance. It is not medical advice and not a medical device. Suna+ unlocks full history and deeper progress. Monthly, yearly, or lifetime. Suna+ is an optional auto-renewing monthly or yearly subscription. A one-time Suna+ Lifetime purchase is also available. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew unless cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period. Manage or cancel in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sunaprivacy.carrd.co/

What’s new

Version 7.0 · Updated October 15, 2026

SUNA 7.0 is our biggest update yet. NEW • Sauna Score v2: heart-rate-based heat load, scored round by round, with sliders for every phase, Rhythm and Consistency, and a comparison with your typical ritual. • Never lose a ritual: an interrupted ritual is restored with all its data. • New This Week: Sauna Score, weekly felt heat load, your personal range and rest between rounds. • New Total: profile, visit heatmap and cards of your typical rituals. • Journey: levels, milestones and the Hall of Fame. • Ritual detail with Rating and Journal: feel and heat sliders, tags and notes. • Rate a ritual straight from the notification. • Apple Watch: a new phase ring with smooth color blending, round numbers, a haptic on every phase change and optional in-sauna tips. • Timer: interval haptics in every phase, set on iPhone or Watch. • Smarter reminders based on your usual sauna days. • All-new onboarding. • iPhone Duo: Home and History side by side. IMPROVED • Redesigned Home and tab bar, smoother transitions. • Redesigned SUNA+. • Cleaner empty history with quiet Apple Health import. FIXES • In-sauna tips work without the timer, a smooth move between rounds and the correct Watch haptics setting.

App privacy

The developer, Jan Kriz, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

Purchases: Purchase History

Used for: Analytics, App Functionality

App details

SUNA - Sauna Tracker is a free Health & Fitness app for iPhone, iPad, iPod touch and Apple Watch, developed by Jan Kriz. It is rated 1.0 out of 5 from 2 ratings on the App Store, requires iOS 17.6 or later, is 25 MB to download and is available in 5 languages. It was first released on February 28, 2026 and last updated on October 15, 2026.

Category: Health & Fitness
Rating: 1.0 / 5 (2 ratings)
Price: Free
Version: 7.0
Size: 25 MB
Requires: iOS 17.6 or later
Compatibility: iPhone, iPad, iPod touch, Apple Watch
Languages: English, Czech, Finnish, German, Chinese
Age rating: 4+
Released: February 28, 2026
Last updated: October 15, 2026
Developer: Jan Kriz

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