# EMDDx vs Differential DX Assistant

The clearest difference is price: Differential DX Assistant at Free against EMDDx's $9.99. Differential DX Assistant also leads on update cadence (every 9 days vs every 45 months). EMDDx's advantage is iOS requirement (12.4 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Differential DX Assistant is free to download; EMDDx costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EMDDx ships an update every 45 months, Differential DX Assistant every 9 days. The most recent releases landed on October 21, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | EMDDx | Differential DX Assistant |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/emddx/id1523957740/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 45 months | **Every 9 days** |
| Monetization | Paid | — |
| Size | 18 MB | 4 MB |
| Requires iOS | **12.4** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [EM Edy, LLC](https://appshunter.io/developer/1502423357) | [tracy tippett](https://appshunter.io/developer/6791173438) |

## What reviewers say

### EMDDx

[App page](https://appshunter.io/ios/app/emddx/id1523957740)

This medical reference app helps users generate differential diagnoses for common chief complaints. It covers a wide range of symptoms, from chest pain to palpitations, providing a powerful diagnostic tool on mobile devices.

**Highlights:** Differential diagnosis generation, Covers common chief complaints, Symptom-based diagnosis, Mobile diagnostic tool, Reference for medical professionals

**Features:** macOS Compatibility

**In-app purchases:** none


### Differential DX Assistant

[App page](https://appshunter.io/ios/app/differential-dx-assistant/id6791173436)

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

**In-app purchases:** none


## Frequently asked questions

### Is EMDDx free?

EMDDx costs $9.99, with no in-app purchases.

### Is Differential DX Assistant free?

Differential DX Assistant is free to download, with no in-app purchases.

### Do EMDDx or Differential DX Assistant have ads?

Neither EMDDx nor Differential DX Assistant shows ads.

### Which is updated more often, EMDDx or Differential DX Assistant?

EMDDx ships an update every 45 months, and Differential DX Assistant every 9 days. Most recently, EMDDx was updated on October 21, 2026 and Differential DX Assistant on October 16, 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.*