# JCAD vs Derm DDx

The clearest difference is rating: JCAD at 5.0 against Derm DDx's 4.3. JCAD also leads on in-app purchases (none vs 1) and iOS requirement (11.0 vs 15.0). Derm DDx's advantage is ratings volume (6 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Derm DDx sells 1 one-off in-app purchase. JCAD asks for nothing beyond the download.

JCAD holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Derm DDx has 6 ratings behind it against 1, so its average is the more settled of the two.

JCAD ships an update every 9 months, Derm DDx every 5 months. The most recent releases landed on September 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | JCAD | Derm DDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/jcad/id630827146/reviews)** | [4.3 (6 ratings)](https://appshunter.io/ios/app/derm-ddx/id6499524221/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 87 MB | 10 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Matrix Medical Communications](https://appshunter.io/developer/991783027) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### JCAD

[App page](https://appshunter.io/ios/app/jcad/id630827146)

This peer-reviewed medical journal provides dermatologists with up-to-date, evidence-based information on clinical and aesthetic dermatology. It features original research, practical discussions, comprehensive reviews, and commentaries from leading experts.

**Highlights:** Peer-reviewed publication, Evidence-based information, Original research, Comprehensive reviews, Expert editorial leadership, Indexed on major databases

**Features:** macOS Compatibility

**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 JCAD free?

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

### Is Derm DDx free?

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

### Which has better reviews, JCAD or Derm DDx?

JCAD is rated higher. JCAD averages 5.0 out of 5 from 1 ratings, while Derm DDx averages 4.3 from 6 ratings.

### Do JCAD or Derm DDx have ads?

Neither JCAD nor Derm DDx shows ads.

### Which is updated more often, JCAD or Derm DDx?

JCAD ships an update every 9 months, and Derm DDx every 5 months. Most recently, JCAD was updated on September 30, 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.*