# CryoZest - Self Experiment — user reviews

> 9 indexed App Store user reviews of CryoZest by OKRA Labs LLC, rated 4.30/5 from 20 ratings.

- Source: https://appshunter.io/ios/app/cryozest-self-experiment/id6449912558/reviews
- App overview in markdown: https://appshunter.io/ios/app/cryozest-self-experiment/id6449912558.md
- Rating breakdown: 5★ 14 · 4★ 2 · 3★ 0 · 2★ 3 · 1★ 1

## Most critical reviews (9 lowest-rated)

### 1/5 — Built for the US, only Fahrenheit temps

*2024-01-17*

Essentially built for the US not the majority of countries which use a metric system.  No option to change the temp to Celcius

### 2/5 — No Sauna or cold plunge timer

*2026-01-06*

The app use to have a cold plunge tracker as well as a sauna tracker but they have gotten rid of it. It used to be the core function of the app

### 2/5 — Decent app. Has problems.

*2024-02-06*

Tracks and records info that other apps don’t. 
Problems I’ve had with it:
When recording a session, my phone goes to sleep. Screen won’t stay on when recording a session. 
Sometimes when I record a session it records the value as 0 minutes 0 sec completed. 
There is no way to edit or delete a session so the days where it gives me a zero value it messes up my tracked info and skews my averages.

**Developer response:** Hello, 

Wanted to thank you for bringing this issue to light. We have updated Cryozest and it now includes the ability to delete an existing therapy session. Give it a download and let us know what you think! With regards to the phone going to sleep, I  suggest going through your phone settings and changing the frequency and  speed  that your phone goes to sleep.

### 2/5 — Apple Watch

*2023-09-09*

I like it but I wish it worked on the Apple Watch ultra.

### 4/5 — Very cool, would love if had Apple Watch app and logged entries into Apple Fitness/Health

*2023-11-16*

Hello,

This is a very rare app to find that allows me to track sauna and cold showers. I just started to use it and enjoyed using it. 

I do wish that it had an Apple Watch app so I could leave my phone in my locker away from the sauna, and that it could have the option to log session entries into Apple Fitness/Health.

Also, I know Garmin watches let you grab temperature. Not sure if Apple Watch lets you, but that would be cool if the app could grab the sauna temperature from the watch.

I would definitely pay for this app to have those features in a paid Pro version.

### 5/5 — Insights are unique

*2026-03-12*

It’s cool to see the correlations it finds. It says my resting heart rate has been decreasing from the swimming I’ve been doing

### 5/5 — Nice app

*2024-02-17*

I use it all the time to track my runs

### 5/5 — Unbelievable

*2024-01-13*

This app has completely revolutionized my life. You need to stay on top of logging your behaviors to get good data but when you do the output is incredible

### 5/5 — CryoZest

*2023-06-07*

This is just the application I need to keep track of my hot saunas and cold plunges, amazing app 🎊🎉🥳

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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 2026-06-10.*