# CardioThoraxia vs ShockRef

The clearest difference is in-app purchases: ShockRef at none against CardioThoraxia's 2. CardioThoraxia's advantage is iOS requirement (18.6 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. CardioThoraxia sells 2 in-app purchases, starting at $19.99 per month. ShockRef asks for nothing beyond the download.

CardioThoraxia ships an update every 3 days, ShockRef every 4 days. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CardioThoraxia | ShockRef |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (8 ratings)](https://appshunter.io/ios/app/shockref/id6793122630/reviews)** |
| Number of ratings | — | **8** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 days |
| Monetization | — | Free |
| Size | 7 MB | 15 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Bender Apps, LLC](https://appshunter.io/developer/1894916304) | [Rishi Kumar](https://appshunter.io/developer/1434016052) |

## What reviewers say

### CardioThoraxia

[App page](https://appshunter.io/ios/app/cardiothoraxia/id6758521707)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Insight - Monthly | $19.99 | per month |
| AI Insight - Annual | $149.99 | per year |


### ShockRef

[App page](https://appshunter.io/ios/app/shockref/id6793122630)

A clinical reference for managing shock and hemodynamics, offering insights into bedside physiology, resuscitation, and mechanical circulatory support. It includes practical calculators and drug references for critical care professionals and students.

**Highlights:** Shock phenotyping, Resuscitation workflows, Vasoactive drug references, Mechanical circulatory support troubleshooting, Physiology-based critical care, Practical calculators

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CardioThoraxia free?

CardioThoraxia is free to download, with in-app purchases available.

### Is ShockRef free?

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

### Do CardioThoraxia or ShockRef have ads?

Neither CardioThoraxia nor ShockRef shows ads.

### Which is updated more often, CardioThoraxia or ShockRef?

CardioThoraxia ships an update every 3 days, and ShockRef every 4 days. Most recently, CardioThoraxia was updated on October 18, 2026 and ShockRef on October 24, 2026.

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