# Fitzpatrick's Derm Flash Cards vs Derm DDx

The clearest difference is price: Derm DDx at Free against Fitzpatrick's Derm Flash Cards's $29.99. Derm DDx also leads on update cadence (every 5 months vs every 15 months). Fitzpatrick's Derm Flash Cards's advantage is in-app purchases (none vs 1) and iOS requirement (10.0 vs 15.0). On ads and device support there is nothing between them.

Derm DDx is free to download; Fitzpatrick's Derm Flash Cards costs $29.99 up front. Derm DDx sells 1 one-off in-app purchase. Fitzpatrick's Derm Flash Cards asks for nothing beyond the download.

Fitzpatrick's Derm Flash Cards ships an update every 15 months, Derm DDx every 5 months. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Fitzpatrick's Derm Flash Cards | Derm DDx |
| --- | --- | --- |
| Price | $29.99 | **Free** |
| Rating | — | **[4.3 (6 ratings)](https://appshunter.io/ios/app/derm-ddx/id6499524221/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 5 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 261 MB | 10 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Usatine & Erickson Media LLC](https://appshunter.io/developer/1466894388) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### Fitzpatrick's Derm Flash Cards

[App page](https://appshunter.io/ios/app/fitzpatricks-derm-flash-cards/id823643851)

This medical reference app provides flashcards derived from a renowned dermatology atlas, covering common and challenging cases. It features intuitive navigation, powerful search with suggestions, and offline access to all content. Users can bookmark cards, create notes, adjust text size, and test their knowledge with a Q&A section.

**Highlights:** 150 common and 100 rare dermatologic cases, Diagnosis, manifestation, and management details, Powerful search with smart suggestions, Bookmark and note-taking functionality, Offline access to all content, Adjustable text size, Q&A testing section

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

**In-app purchases:** none


### Derm DDx

[App page](https://appshunter.io/ios/app/derm-ddx/id6499524221)

This app provides visual, point-of-care guidance for diagnosing skin disorders. It features a large database of high-resolution images, allowing users to compare variations, zoom in, and access clinical history and treatment options for over 160 dermatologic conditions.

**Highlights:** 650+ high-quality dermatology images, Guidance for 160+ dermatologic conditions, Side-by-side image variations, Zoomable high-resolution images, Clinical history and treatment options, Cross-referencing to differential diagnoses, Full text search and custom notes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dermatology DDx | $69.99 | one-time |


## Frequently asked questions

### Is Fitzpatrick's Derm Flash Cards free?

Fitzpatrick's Derm Flash Cards costs $29.99, with no in-app purchases.

### Is Derm DDx free?

Derm DDx is free to download, with in-app purchases available.

### Do Fitzpatrick's Derm Flash Cards or Derm DDx have ads?

Neither Fitzpatrick's Derm Flash Cards nor Derm DDx shows ads.

### Which is updated more often, Fitzpatrick's Derm Flash Cards or Derm DDx?

Fitzpatrick's Derm Flash Cards ships an update every 15 months, and Derm DDx every 5 months. Most recently, Fitzpatrick's Derm Flash Cards was updated on October 11, 2026 and Derm DDx 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.*