# Heart Transplant Sizing App

> Medical app for calculating donor-recipient heart size mismatch percentages. (iPhone/iPad app by James Costerton.)

- Source: https://appshunter.io/ios/app/heart-transplant-sizing-app/id1291915285 (this page in markdown: same URL + `.md`)
- Developer: [James Costerton](https://appshunter.io/developer/1291915284)
- Category: Medical
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 17+
- Requires: iOS 9.1 · 77 MB
- Released: 2019-09-03
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/heart-transplant-sizing-app/id1291915285/reviews.md

## What is Heart Transplant Sizing App?

Size matching is an important consideration in heart transplantation. It is important to avoid implanting an under-sized heart. Size matching has historically been performed using donor and recipient weight. Equations derived from cardiac MRI studies allow prediction of an individual’s heart mass using gender, age, height and weight. Potential donor-recipient pairs may be accurately size-matched using these equations. This allows identification of donor-recipient pairs who may be at higher risk of primary graft dysfunction or post-operative mortality. This app allows heart transplant surgeons and physicians to quickly and easily calculate the mis-match percentage in a potential donor-recipient pair and inform decisions about whether a particular donor organ is adequately sized for a particular recipient.

## Key features

- Donor-recipient size mismatch calculation
- Heart mass prediction equations
- Risk identification for graft dysfunction
- Informed organ selection decisions
- Quick and easy calculations


## Frequently asked questions about Heart Transplant Sizing App

### What is the Heart Transplant Sizing App used for?

The Heart Transplant Sizing App is used by medical professionals to calculate the size mismatch percentage between a potential donor heart and a recipient. This helps in making informed decisions about organ suitability.

### How does the Heart Transplant Sizing App calculate heart size?

It uses equations derived from cardiac MRI studies that predict an individual’s heart mass based on gender, age, height, and weight.

### What are the benefits of using the Heart Transplant Sizing App?

The app helps identify donor-recipient pairs at higher risk of primary graft dysfunction or post-operative mortality, ensuring better size matching for improved transplant outcomes.

### Is the Heart Transplant Sizing App available on Android devices?

Based on the provided information, the app is currently supported on iPhone and iPod devices. Compatibility with Android is not specified.

### How often is the Heart Transplant Sizing App updated?

The latest version of the app, 1.2, was last updated on July 9, 2020. This indicates a past update frequency, but current update schedules are not detailed.

### What is the age rating for the Heart Transplant Sizing App?

The app has an age rating of 17+, suggesting it is intended for mature users and professionals in the medical field.

### Does the Heart Transplant Sizing App contain advertisements?

No, the Heart Transplant Sizing App does not contain advertisements, as indicated by the 'hasAds' flag being false.

### What is the user sentiment for the Heart Transplant Sizing App?

The app has received a high rating of 5.0 stars from 2 ratings, indicating very positive user sentiment among its current users.

## Version history (last 3 releases)

### 1.2 — 2020-07-09

Added clear function for Donor and Recipient field-sets.
Corrected non-functional typo in About overlay.

### 1.1 — 2019-10-12

Predicted Heart Mass (PHM) ratio added to results.
Input age, weight and height ranges limited to reflect study cohort.

### 1.0 — 2019-09-03

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*