# CryoZest vs IronMatrix

The clearest difference is update cadence: CryoZest at every 2 days against IronMatrix's every 22 months. IronMatrix's advantage is iOS requirement (13.5 vs 16.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CryoZest ships an update every 2 days, IronMatrix every 22 months. The most recent releases landed on June 10, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | CryoZest | IronMatrix |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (20 ratings)](https://appshunter.io/ios/app/cryozest-self-experiment/id6449912558/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 22 months |
| Monetization | Free | — |
| Size | 4 MB | 14 MB |
| Requires iOS | 16.2 | **13.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OKRA Labs LLC](https://appshunter.io/developer/1691008963) | [The IronMatrix Workout](https://appshunter.io/developer/1476375883) |

## What reviewers say

### CryoZest

[App page](https://appshunter.io/ios/app/cryozest-self-experiment/id6449912558)

Track hot and cold therapy sessions like sauna, yoga, and cold plunges. Seamlessly integrate with the Health app to monitor progress and uncover patterns in your wellness journey. Log details like duration, temperature, and intensity for data-driven insights.

**Highlights:** Log hot and cold therapy sessions, Track duration, temperature, and intensity, View session history and trends, Integrate with Health app via HealthKit/CareKit, Monitor associated health metrics, Data-driven wellness insights

**Features:** macOS Compatibility

**In-app purchases:** none


### IronMatrix

[App page](https://appshunter.io/ios/app/ironmatrix/id6450706368)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CryoZest free?

CryoZest is free to download, with no in-app purchases.

### Is IronMatrix free?

IronMatrix is free to download, with no in-app purchases.

### Do CryoZest or IronMatrix have ads?

Neither CryoZest nor IronMatrix shows ads.

### Which is updated more often, CryoZest or IronMatrix?

CryoZest ships an update every 2 days, and IronMatrix every 22 months. Most recently, CryoZest was updated on June 10, 2026 and IronMatrix on September 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*