# Dermap vs Derm DDx

The clearest difference is in-app purchases: Dermap at none against Derm DDx's 1. Dermap also leads on update cadence (monthly vs every 5 months) and iOS requirement (13.0 vs 15.0). Derm DDx's advantage is chart position (#194 vs unranked). 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. Dermap asks for nothing beyond the download.

Dermap ships an update monthly, Derm DDx every 5 months. The most recent releases landed on September 14, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Dermap | Derm DDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/derm-ddx/id6499524221/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#194** |
| Size | 128 MB | 10 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [SPECLIPSE, Inc](https://appshunter.io/developer/1650524279) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### Dermap

[App page](https://appshunter.io/ios/app/dermap/id1673650340)

**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 Dermap free?

Dermap is free to download, with no in-app purchases.

### Is Derm DDx free?

Derm DDx is free to download, with in-app purchases available.

### Do Dermap or Derm DDx have ads?

Neither Dermap nor Derm DDx shows ads.

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

Dermap ships an update monthly, and Derm DDx every 5 months. Most recently, Dermap was updated on September 14, 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.*