# FOAM Cortex vs EM Radiology Reference

The clearest difference is device support: EM Radiology Reference at 3 against FOAM Cortex's 1. On price, update cadence, 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.

FOAM Cortex ships an update fortnightly, EM Radiology Reference every 3 weeks. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | FOAM Cortex | EM Radiology Reference |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/foam-cortex/id6756235238/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Ad-supported | — |
| Size | 60 MB | 31 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Tom Fadial](https://appshunter.io/developer/1316852248) | [A&O4 Technologies LLC](https://appshunter.io/developer/1854511426) |

## What reviewers say

### FOAM Cortex

[App page](https://appshunter.io/ios/app/foam-cortex/id6756235238)

An AI-powered reference tool for emergency medicine clinicians, providing fast, trustworthy answers at the bedside. It leverages high-quality FOAMed resources and an expanding knowledge base to help users search, interpret, and apply information with confidence.

**Highlights:** Instant AI clinical support, Curated FOAMed knowledge base, Structured clinical summaries, Integrated source transparency, Fast mobile experience, Search across topics and modalities

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

**In-app purchases:** none


### EM Radiology Reference

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

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

**In-app purchases:** none


## Frequently asked questions

### Is FOAM Cortex free?

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

### Is EM Radiology Reference free?

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

### Do FOAM Cortex or EM Radiology Reference have ads?

Neither FOAM Cortex nor EM Radiology Reference shows ads.

### Which is updated more often, FOAM Cortex or EM Radiology Reference?

FOAM Cortex ships an update fortnightly, and EM Radiology Reference every 3 weeks. Most recently, FOAM Cortex was updated on October 2, 2026 and EM Radiology Reference on October 3, 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.*