# Clinical Guidelines vs Derm DDx

The clearest difference is rating: Derm DDx at 4.3 against Clinical Guidelines's 3.7. Derm DDx also leads on update cadence (every 5 months vs every 38 months) and iOS requirement (15.0 vs 17.0). Clinical Guidelines's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and device support there is nothing between them.

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

Derm DDx holds the better App Store score, 4.3 against 3.7. Both are backed by a comparable volume of ratings — 3 and 6 respectively.

Clinical Guidelines ships an update every 38 months, Derm DDx every 5 months. The most recent releases landed on October 13, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Clinical Guidelines | Derm DDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/clinical-guidelines/id6447535801/reviews) | **[4.3 (6 ratings)](https://appshunter.io/ios/app/derm-ddx/id6499524221/reviews)** |
| Number of ratings | 3 | **6** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 5 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 35 MB | 10 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [American Academy of Dermatology](https://appshunter.io/developer/514894395) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### Clinical Guidelines

[App page](https://appshunter.io/ios/app/clinical-guidelines/id6447535801)

Access dermatologic reference guidelines, documents, and calculators for various skin conditions. Bookmark important sections and use the search function for quick information retrieval on your device.

**Highlights:** Reference guidelines, Dermatologic documents, Disease calculators, Bookmark sections, In-app search

**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 Clinical Guidelines free?

Clinical Guidelines 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, Clinical Guidelines or Derm DDx?

Derm DDx is rated higher. Clinical Guidelines averages 3.7 out of 5 from 3 ratings, while Derm DDx averages 4.3 from 6 ratings.

### Do Clinical Guidelines or Derm DDx have ads?

Neither Clinical Guidelines nor Derm DDx shows ads.

### Which is updated more often, Clinical Guidelines or Derm DDx?

Clinical Guidelines ships an update every 38 months, and Derm DDx every 5 months. Most recently, Clinical Guidelines was updated on October 13, 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.*