# CPNP vs Derm DDx

The clearest difference is price: Derm DDx at Free against CPNP's $19.99. CPNP's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Derm DDx is free to download; CPNP costs $19.99 up front. Derm DDx sells 1 one-off in-app purchase. CPNP asks for nothing beyond the download.

## The numbers

| Metric | CPNP | Derm DDx |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | — | **[4.3 (6 ratings)](https://appshunter.io/ios/app/derm-ddx/id6499524221/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 102 MB | 10 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Learn-Train Inc](https://appshunter.io/developer/1695340059) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### CPNP

[App page](https://appshunter.io/ios/app/cpnp-pc-2024-prep/id6478044702)

**Features:** macOS Compatibility

**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 CPNP free?

CPNP costs $19.99, with no in-app purchases.

### Is Derm DDx free?

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

### Do CPNP or Derm DDx have ads?

Neither CPNP nor Derm DDx shows ads.

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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.*