# MGH Heart vs InvoSurg

The clearest difference is rating: MGH Heart at 4.6 against InvoSurg's 4.3. MGH Heart also leads on update cadence (every 4 months vs every 10 months) and iOS requirement (12.0 vs 14.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MGH Heart holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 5 and 12 respectively.

MGH Heart ships an update every 4 months, InvoSurg every 10 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | MGH Heart | InvoSurg |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/mgh-heart/id1451245966/reviews)** | [4.3 (12 ratings)](https://appshunter.io/ios/app/invosurg/id1480250400/reviews) |
| Number of ratings | 5 | **12** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 10 months |
| Monetization | Free | Free |
| Size | 44 MB | 22 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Massachusetts General Hospital](https://appshunter.io/developer/376928206) | [Invosurg Inc.](https://appshunter.io/developer/1480250399) |

## What reviewers say

### MGH Heart

[App page](https://appshunter.io/ios/app/mgh-heart/id1451245966)

This app offers clinical care guidelines for patients needing ECMO or suffering from Aortic Dissection. It provides direct phone access to on-call physicians for assistance and allows for patient referrals to the MGH Heart Center.

**Highlights:** ECMO clinical care guidelines, Aortic Dissection treatment guidelines, One-touch physician contact, Patient referral to MGH Heart Center, Emergency care assistance

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

**In-app purchases:** none


### InvoSurg

[App page](https://appshunter.io/ios/app/invosurg/id1480250400)

This medical app assists cardiac surgery clinicians by providing access to individualized care information, calculations for delivered oxygen during cardiopulmonary bypass, and a repository of educational events and publications. It serves as a convenient mobile reference for CPB and Extra Corporeal Life Support therapies, along with evidence-based guidelines.

**Highlights:** Individualized care information, Delivered Oxygen (DO2) calculation, Educational event calendar, CPB and ECLS therapy information, Evidence-Based Guidelines reference, Cardiac surgery publications

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MGH Heart free?

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

### Is InvoSurg free?

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

### Which has better reviews, MGH Heart or InvoSurg?

MGH Heart is rated higher. MGH Heart averages 4.6 out of 5 from 5 ratings, while InvoSurg averages 4.3 from 12 ratings.

### Do MGH Heart or InvoSurg have ads?

Neither MGH Heart nor InvoSurg shows ads.

### Which is updated more often, MGH Heart or InvoSurg?

MGH Heart ships an update every 4 months, and InvoSurg every 10 months. Most recently, MGH Heart was updated on October 24, 2026 and InvoSurg on October 26, 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.*