# Dermos vs Derm DDx

The clearest difference is rating: Derm DDx at 4.3 against Dermos's 3.7. Dermos's advantage is in-app purchases (none vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Derm DDx sells 1 one-off in-app purchase. Dermos 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.

Dermos ships an update every 3 months, Derm DDx every 5 months. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Dermos | Derm DDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/dermos/id1626894732/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 3 months** | Every 5 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 27 MB | 10 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Dermos LLC](https://appshunter.io/developer/1626894734) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### Dermos

[App page](https://appshunter.io/ios/app/dermos/id1626894732)

Contribute to life-saving research by submitting photos of skin lesions. This app helps train an AI for accurate skin condition identification. Your submissions aid in developing a powerful diagnostic tool.

**Highlights:** Submit skin lesion photos, Train AI for accuracy, Contribute to medical research, Help save lives

**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 Dermos free?

Dermos 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, Dermos or Derm DDx?

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

### Do Dermos or Derm DDx have ads?

Neither Dermos nor Derm DDx shows ads.

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

Dermos ships an update every 3 months, and Derm DDx every 5 months. Most recently, Dermos was updated on October 14, 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.*