Saavu
Your sauna. Your proof.
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
Track sauna and cold sessions on iPhone or Apple Watch. See your heart rate, HRV, and weekly rhythm at a glance.
People feel better after a sauna. They just can't prove it. Existing fitness apps treat sauna as an afterthought, a manual log entry at best. And nobody takes their phone into a sauna anyway. Without data, the habit feels invisible. Without proof, habits fade.
Saavu is a sauna companion that pairs with your Apple Watch. Your Watch goes in with you. Saavu reads what your body does in real time.
Start a session on your phone. Saavu reads your heart rate live from your Apple Watch via HealthKit, guides you through heat, cold, and rest phases, and shows your body's response in real time. Leave the phone outside. Your Watch keeps the session going.
After each session, Saavu shows your heart rate curve, HRV recovery, and a face state, a simple visual that maps to how your body responded. Over time, you'll see your resting heart rate shift, your HRV improve, and your readiness score climb. These are your numbers, compared only to yourself.
Saavu maps saunas, spas, and cold plunge venues near you. Check in when you arrive, and your sessions are linked to the places you visit. Can't find your local? Submit it. The venue database grows with the community.
A quiet calendar on your home screen tracks your consistency. No gamification noise, just an honest record of the days you showed up. Weekly charts show your trend at a glance.
Free users get unlimited session tracking, venue discovery, check-ins, and streak tracking. Saavu Pro unlocks full session history, HRV trend analytics, personalised wellness insights, session sharing, and your wellness score.
Saavu is not a medical app. It does not diagnose or treat any condition. All data is for personal wellness awareness, your body's story, told in your own numbers.
Heat. Cold. Thrive.
- Terms of Use (EULA): https://saavu.app/terms/
- Privacy Policy: https://saavu.app/privacy/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Smarter Apple Watch sessions, sharper wrist UI.
• Water lock now turns on automatically for cold plunges - no more phantom taps from a wet wrist
• Sessions without a heart-rate reading no longer save as 0 bpm
• Your end-of-session mood face now reflects how the session actually went, straight from the watch
• Watch shows "--" while the heart-rate sensor warms up instead of a confusing zero
• The watch now tells you when it's waiting to sync stats from your iPhone
• Bigger, easier tap targets and clearer text on smaller watch faces
• History loads with a smooth placeholder instead of a blank screen
• General fixes and performance improvements
The developer, Rivoro Studio, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- User Content
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Rivoro Studio LTD
- Size
- 66.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Saavu Pro (Annual) $39.99
- Saavu Pro $4.99
- Copyright
- © 2026 Rivoro Studio LTD