# Coltrain vs Emory ECMO

The clearest difference is update cadence: Coltrain at monthly against Emory ECMO's every 15 months. Emory ECMO's advantage is iOS requirement (13.4 vs 15.6). 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.

Coltrain ships an update monthly, Emory ECMO every 15 months. The most recent releases landed on August 16, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Coltrain | Emory ECMO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (17 ratings)](https://appshunter.io/ios/app/coltrain/id1491315335/reviews)** | — |
| Number of ratings | **17** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 15 months |
| Monetization | Free | — |
| Size | 302 MB | 15 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Cognition Med, LLC](https://appshunter.io/developer/1491315334) | [Emory University](https://appshunter.io/developer/387102326) |

## 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


### Emory ECMO

[App page](https://appshunter.io/ios/app/emory-ecmo/id1667321927)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Coltrain free?

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

### Is Emory ECMO free?

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

### Do Coltrain or Emory ECMO have ads?

Neither Coltrain nor Emory ECMO shows ads.

### Which is updated more often, Coltrain or Emory ECMO?

Coltrain ships an update monthly, and Emory ECMO every 15 months. Most recently, Coltrain was updated on August 16, 2026 and Emory ECMO on September 17, 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.*