Ultra Plunge & Sauna

Ultra Plunge & Sauna

Sauna & Cold Plunge Tracker

45 ratings
26 reviews
Free
In-App Purchases

Details

  • Released
  • Updated

Features

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About

Track and analyze your cold plunge, sauna, and other recovery sessions with real-time metrics and AI-powered insights. Build consistency, monitor progress, and enhance your wellness routine directly from your Apple Watch.

Real-time temperature and humidity tracking
Heart rate monitoring and strain indicator
AI-powered progress insights
Guided breathing exercises
Session tracking for various recovery types
Strava and social media sharing
Apple Watch widgets
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What's New in Ultra Plunge & Sauna

2.0.6

July 20, 2026

Now you can create your own activities and customize which ones show in the main menu • Create your own activity under Settings->Custom Activities • Customize the activity menu under Settings->Customize Activity Menu

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Subscription plans

Monthly

Unlocks all features, billed monthly

$5.991 Month
7 Days trial
Price Updates
July 16, 2026$5.99
August 3, 2025$4.99
October 22, 2024$5.99
October 5, 2024$4.99
How to cancel Ultra Plunge & Sauna subscription ⁉️

User reviews

Works good for a few days

Works good for the first few days - then very inconsistent. I have ultra 3 for reference. It seems like every other day the app believes I’m getting into a 44° sauna and then the other half the time the app just continually loads for a minute at a time. Not auto ending the cold plunge session when you leave the plunge also is very frustrating. It seems like it’s better just to use the free dive app that comes with the watch.
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Decent but not Perfect-Updated

What works well: The app loads and connects with Apple Watch fine. It records the session and uploads to Strava. It logs your sessions.
What doesn’t work well or at all:
It doesn’t seem to know my location even though it has location permission. It logs the session at the correct time but uploads it to Strava with a time 10 hours later. There is no online support, just a static website.
Update to my initial review (one month later): the developer has responded to every issue I had and the app is functioning much more consistently now.
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Response from developer

Thank you for bringing this issue with Strava to our attention, it has been fixed with the latest update.

Decent but not Perfect

What works well: The app loads and connects with Apple Watch fine. It records the session and uploads to Strava. It logs your sessions.
What doesn’t work well or at all:
It doesn’t seem to know my location even though it has location permission. It logs the session at the correct time but uploads it to Strava with a time 10 hours later. There is no online support, just a static website.
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Best cold plunge app

After cold plunging for over 5 years and trying every app out there I find this is best. All the information is simple and straightforward while in the water. Also, I found the water temp is very accurate. The AI is very interesting. As someone who started 5 years ago this is a savior. No more having to log in to my calendar app after taking pictures of my info outside. I highly recommend this app. Everyone that I have recommended it to feels the same way.
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Great app, great support

When I first started using the app it was ok, it worked and did what I needed. But I had some issues. I reached out to support and to my surprise, all of my issues were already on track to be resolved in the next release and lo and behold they were! The latest release is exactly what I envisioned the Apple Watch app should be like. It works flawlessly and their support was kind enough to not only let me know the release was coming but also to let me know when it was available.
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Developer apps

FAQ

What devices is Ultra Cold Plunge & Sauna compatible with?

This app is built for Apple Watch. To measure water temperature, you will need an Apple Watch Ultra or Series 10. For sauna temperature and humidity, an optional Bluetooth sensor is required.

How does the app track sauna temperature and humidity?

Sauna temperature and humidity can be tracked using an optional Bluetooth temperature sensor. This sensor can be purchased separately to integrate with the app for more accurate readings during your sauna sessions.

Can I share my session data with other platforms?

Yes, you can automatically share your completed sessions to Strava or other social media platforms. This allows you to keep a consolidated record of your fitness activities and share your progress with your community.

What types of recovery sessions can I track?

The app supports tracking a wide variety of sessions, including cold plunge, ice bath, polar plunge, cold shower, sauna, steam room, hot plunge, cryotherapy, float tank, red light therapy, and hyperbaric chamber sessions.

What is the pricing model for Ultra Cold Plunge & Sauna?

The app offers a 7-day free trial with full, ad-free access. After the trial period, a subscription is required to continue using the app. Subscriptions renew automatically unless canceled at least 24 hours before the end of the billing period.