# Atopic Dermatitis vs Derm DDx

The clearest difference is in-app purchases: Atopic Dermatitis at none against Derm DDx's 1. Atopic Dermatitis also leads on update cadence (every 5 weeks vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

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

Atopic Dermatitis ships an update every 5 weeks, Derm DDx every 5 months. The most recent releases landed on October 9, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Atopic Dermatitis | Derm DDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (6 ratings)](https://appshunter.io/ios/app/derm-ddx/id6499524221/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 23 MB | 10 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [@Point of Care](https://appshunter.io/developer/916313675) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### Atopic Dermatitis

[App page](https://appshunter.io/ios/app/atopic-dermatitis/id1348474191)

**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 Atopic Dermatitis free?

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

### Is Derm DDx free?

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

### Do Atopic Dermatitis or Derm DDx have ads?

Neither Atopic Dermatitis nor Derm DDx shows ads.

### Which is updated more often, Atopic Dermatitis or Derm DDx?

Atopic Dermatitis ships an update every 5 weeks, and Derm DDx every 5 months. Most recently, Atopic Dermatitis was updated on October 9, 2026 and Derm DDx on October 17, 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.*