Ultra Cold Plunge & Sauna

Ultra Cold Plunge & Sauna

Sauna & Cold Plunge Tracker

51 ratings
33 reviews
Free
In-App Purchases

Details

Released
September 17, 2024
Updated
October 20, 2026

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 Cold Plunge & Sauna

2.0.13

October 20, 2026

• New background animation when submerging the watch in water

11

Subscriptions & In-App Purchases

Monthly

Unlocks all features, billed monthly

$5.991 Month
7 Days trial
Price Updates
October 4, 2026→$5.99
August 7, 2026→$4.99
July 23, 2026→$6.99
July 16, 2026→$5.99
August 3, 2025→$4.99
October 22, 2024→$5.99
October 5, 2024→$4.99
How to cancel Ultra Cold Plunge & Sauna subscription ⁉️

User reviews

Best cold plunge/sauna app by far

Since starting my cold plunge journey I’ve been looking for an app that will track water temperature, time, and heart rate on my watch and this app does it all and a lot more. Also works great in my sauna. I have now been using this app for over a year, just renewed my subscription, and it has been excellent. More importantly, the developer is VERY responsive. I get a response same day and many of my suggestions have been added in updates
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Great app

Love this app to track heart rate and sessions across my contrast therapy. Support was fantastic too

Convenient

It’s convenient and easy to use!

Some suggestions

Great app. My suggestions:
- don’t show the paywall directly, even with the free trial many will not try
- it didn’t activate water mode in Watch Ultra when I select plunge (for reference, was untimed)
- if can sense water, after 5 seconds out of water suggest pause
- let use chose 3, 5 or 10 seconds countdown
- let use put goal (like 10 min) and mark time counting up and allow passing the allotted time
- when user defines temperature, it is not showing during the plunge

Great app, anyway. Some improvements only.
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Response from developer

Thanks for your feedback, we will consider these for future updates.

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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Response from developer

Hi, thank you for your feedback. We have not encountered the issue you are reporting but please contact our support and we will be happy to get it working for you: info@ultraplunge.app We do not automatically end the cold plunge session when you leave the plunge because most users do not keep their hands submerged the whole time. We will consider making that an optional feature in a future update though.

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.