# EM Radiology Reference vs MSK Hero

The clearest difference is update cadence: EM Radiology Reference at every 3 weeks against MSK Hero's every 3 months. 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.

EM Radiology Reference ships an update every 3 weeks, MSK Hero every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | EM Radiology Reference | MSK Hero |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 31 MB | 43 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [A&O4 Technologies LLC](https://appshunter.io/developer/1854511426) | [Vitalink Media FZ-LLC](https://appshunter.io/developer/1830171419) |

## What reviewers say

### EM Radiology Reference

[App page](https://appshunter.io/ios/app/em-radiology-reference/id6762138171)

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

**In-app purchases:** none


### MSK Hero

[App page](https://appshunter.io/ios/app/msk-hero/id6789682689)

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

**In-app purchases:** none


## Frequently asked questions

### Is EM Radiology Reference free?

EM Radiology Reference is free to download, with no in-app purchases.

### Is MSK Hero free?

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

### Do EM Radiology Reference or MSK Hero have ads?

Neither EM Radiology Reference nor MSK Hero shows ads.

### Which is updated more often, EM Radiology Reference or MSK Hero?

EM Radiology Reference ships an update every 3 weeks, and MSK Hero every 3 months. Most recently, EM Radiology Reference was updated on October 24, 2026 and MSK Hero on October 24, 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.*