# DermaCompass vs Derm DDx

The clearest difference is rating: DermaCompass at 5.0 against Derm DDx's 4.0. DermaCompass also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 5 months). Derm DDx's advantage is chart position (#194 vs unranked). 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. DermaCompass asks for nothing beyond the download.

DermaCompass holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

DermaCompass ships an update every 3 weeks, Derm DDx every 5 months. The most recent releases landed on August 3, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | DermaCompass | Derm DDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/dermacompass/id1124314488/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/derm-ddx/id6499524221/reviews) |
| Number of ratings | 2 | **4** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#194** |
| Size | 38 MB | 10 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [swiss4ward Europe S.L.](https://appshunter.io/developer/1012882836) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### DermaCompass

[App page](https://appshunter.io/ios/app/dermacompass/id1124314488)

This medical app serves as a diagnostic tool and electronic textbook for physicians. It offers a comprehensive database of skin disease diagnoses, differential diagnoses, therapies, and high-resolution images to aid in daily clinical work. Users can access detailed information, compare images, and receive therapy guidance.

**Highlights:** Diagnostic tool, Electronic textbook, 322 diagnoses, 450 differential diagnoses, 159 therapies, 6,000+ images, Personalized notes and sharing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Derm DDx

[App page](https://appshunter.io/ios/app/derm-ddx/id6499524221)

**Currently charting:** #194 Top Grossing · Medical (US App Store)

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 DermaCompass free?

DermaCompass 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, DermaCompass or Derm DDx?

DermaCompass is rated higher. DermaCompass averages 5.0 out of 5 from 2 ratings, while Derm DDx averages 4.0 from 4 ratings.

### Do DermaCompass or Derm DDx have ads?

Neither DermaCompass nor Derm DDx shows ads.

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

DermaCompass ships an update every 3 weeks, and Derm DDx every 5 months. Most recently, DermaCompass was updated on August 3, 2026 and Derm DDx on September 18, 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.*