# UVee Control vs Derm DDx

The clearest difference is in-app purchases: UVee Control at none against Derm DDx's 1. UVee Control also leads on iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Derm DDx sells 1 one-off in-app purchase. UVee Control asks for nothing beyond the download.

UVee Control ships an update every 4 months, Derm DDx every 5 months. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | UVee Control | Derm DDx |
| --- | --- | --- |
| Price | Free | 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 4 months** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 29 MB | 10 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPad, Mac | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [UVee](https://appshunter.io/developer/1529099725) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### UVee Control

[App page](https://appshunter.io/ios/app/uvee-control/id914476277)

**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 UVee Control free?

UVee Control 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 UVee Control or Derm DDx have ads?

Neither UVee Control nor Derm DDx shows ads.

### Which is updated more often, UVee Control or Derm DDx?

UVee Control ships an update every 4 months, and Derm DDx every 5 months. Most recently, UVee Control 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.*