# Model Dermatol vs Derm DDx

The clearest difference is in-app purchases: Model Dermatol at none against Derm DDx's 1. Model Dermatol also leads on update cadence (every 8 days vs every 5 months) and rating (4.7 vs 4.3). On price, ads and device support there is nothing between them.

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

Model Dermatol holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Model Dermatol has 32 ratings behind it against 6, so its average is the more settled of the two.

Model Dermatol ships an update every 8 days, Derm DDx every 5 months. The most recent releases landed on October 9, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Model Dermatol | Derm DDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (32 ratings)](https://appshunter.io/ios/app/model-dermatol-wiki/id1553068524/reviews)** | [4.3 (6 ratings)](https://appshunter.io/ios/app/derm-ddx/id6499524221/reviews) |
| Number of ratings | **32** | 6 |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 5 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 10 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Iderma](https://appshunter.io/developer/1550481211) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### Model Dermatol

[App page](https://appshunter.io/ios/app/model-dermatol-wiki/id1553068524)

This AI-powered tool analyzes skin photos to find relevant medical information on potential conditions like warts, melanoma, and rashes. It links to authoritative resources and can classify 186 different skin issues, though it is not a diagnostic app.

**Highlights:** AI-powered photo analysis, Searches medical documents, Identifies common skin disorders, Classifies 186 skin conditions, Links to authoritative resources, Free to use

**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 Model Dermatol free?

Model Dermatol 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, Model Dermatol or Derm DDx?

Model Dermatol is rated higher. Model Dermatol averages 4.7 out of 5 from 32 ratings, while Derm DDx averages 4.3 from 6 ratings.

### Do Model Dermatol or Derm DDx have ads?

Neither Model Dermatol nor Derm DDx shows ads.

### Which is updated more often, Model Dermatol or Derm DDx?

Model Dermatol ships an update every 8 days, and Derm DDx every 5 months. Most recently, Model Dermatol 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.*