# DermEngine vs Derm DDx

The clearest difference is in-app purchases: DermEngine at none against Derm DDx's 1. DermEngine also leads on update cadence (monthly vs every 5 months) and iOS requirement (12.0 vs 15.0). Derm DDx's advantage is rating (4.0 vs 3.8) and 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. DermEngine asks for nothing beyond the download.

Derm DDx holds the better App Store score, 4.0 against 3.8. Both are backed by a comparable volume of ratings — 11 and 4 respectively.

DermEngine ships an update monthly, Derm DDx every 5 months. The most recent releases landed on September 11, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | DermEngine | Derm DDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (11 ratings)](https://appshunter.io/ios/app/dermengine/id998126403/reviews) | **[4.0 (4 ratings)](https://appshunter.io/ios/app/derm-ddx/id6499524221/reviews)** |
| Number of ratings | **11** | 4 |
| Positive reviews | 68.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Best chart rank | — | **#194** |
| Size | 144 MB | 10 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [MetaOptima Technology Inc.](https://appshunter.io/developer/438148878) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### DermEngine

[App page](https://appshunter.io/ios/app/dermengine/id998126403)

This platform offers intelligent and secure dermatology tools for healthcare professionals. It enables online clinic setup, tele-dermatology consultations, and high-quality patient image access. Medical professionals can also securely share cases with colleagues for second opinions.

**Highlights:** AI-based imaging, Tele-dermatology consultations, Secure image sharing, Full-body imaging and tracking, Expert network for referrals, HIPAA-compliant

**Features:** 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 DermEngine free?

DermEngine 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, DermEngine or Derm DDx?

Derm DDx is rated higher. DermEngine averages 3.8 out of 5 from 11 ratings, while Derm DDx averages 4.0 from 4 ratings.

### Do DermEngine or Derm DDx have ads?

Neither DermEngine nor Derm DDx shows ads.

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

DermEngine ships an update monthly, and Derm DDx every 5 months. Most recently, DermEngine was updated on September 11, 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.*