# i vs Emory ECMO

The clearest difference is update cadence: i at every 4 months against Emory ECMO's every 15 months. i also leads on iOS requirement (10.0 vs 13.4). 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.

i ships an update every 4 months, Emory ECMO every 15 months. The most recent releases landed on September 21, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | i | Emory ECMO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (7 ratings)](https://appshunter.io/ios/app/i-perfuse/id817922451/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 15 months |
| Monetization | Free | — |
| Size | 31 MB | 15 MB |
| Requires iOS | **10.0** | 13.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Courtland Menke](https://appshunter.io/developer/817922454) | [Emory University](https://appshunter.io/developer/387102326) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-perfuse/id817922451)

This medical app assists clinical perfusionists and students with cardiac surgery calculations. It offers tools for patient volume, flow rates, drug information, and quizzes. Access common equations and perfusion news within the app.

**Highlights:** Adult and Pediatric Calculators, SVR and PVR Calculator, Oxygen Delivery and Consumption Calculator, Pediatric Cannula Recommendations, Searchable Drug Database, Multiple Choice Quiz, Common Equations and Normal Values

**Features:** macOS Compatibility

**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 i free?

i 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 i or Emory ECMO have ads?

Neither i nor Emory ECMO shows ads.

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

i ships an update every 4 months, and Emory ECMO every 15 months. Most recently, i was updated on September 21, 2026 and Emory ECMO on October 10, 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.*