# Coltrain vs CardioThoraxia

The clearest difference is in-app purchases: Coltrain at none against CardioThoraxia's 2. Coltrain also leads on iOS requirement (16.0 vs 18.6). CardioThoraxia's advantage is update cadence (every 3 days vs monthly). On price, 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. Coltrain asks for nothing beyond the download.

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

## The numbers

| Metric | Coltrain | CardioThoraxia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (17 ratings)](https://appshunter.io/ios/app/coltrain/id1491315335/reviews)** | — |
| Number of ratings | **17** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free | — |
| Size | 305 MB | 7 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Cognition Med, LLC](https://appshunter.io/developer/1491315334) | [Bender Apps, LLC](https://appshunter.io/developer/1894916304) |

## What reviewers say

### Coltrain

[App page](https://appshunter.io/ios/app/coltrain/id1491315335)

A secure, cloud-based messaging platform for healthcare professionals to enhance patient care and collaboration. It allows for case-based discussions and the secure sharing of photos, videos, and documents.

**Highlights:** HIPAA-compliant messaging, Secure cloud-based platform, Case-based discussions, Photo and document sharing, Peer-to-peer communication, Mobile device compatibility

**Features:** Vision Pro support

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Coltrain free?

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

### Is CardioThoraxia free?

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

### Do Coltrain or CardioThoraxia have ads?

Neither Coltrain nor CardioThoraxia shows ads.

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

Coltrain ships an update monthly, and CardioThoraxia every 3 days. Most recently, Coltrain was updated on October 24, 2026 and CardioThoraxia on October 18, 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.*