# VisualDx vs WHO UMD

The clearest difference is in-app purchases: WHO UMD at none against VisualDx's 11. WHO UMD also leads on iOS requirement (9.0 vs 16.4). VisualDx's advantage is chart position (#13 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. VisualDx sells 11 in-app purchases, starting at $39.99 per month. WHO UMD asks for nothing beyond the download.

## The numbers

| Metric | VisualDx | WHO UMD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (186 ratings)](https://appshunter.io/ios/app/visualdx/id348177521/reviews)** | — |
| Number of ratings | **186** | — |
| Positive reviews | 84.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Subscription | — |
| Best chart rank | **#13** | — |
| Size | 220 MB | 49 MB |
| Requires iOS | 16.4 | **9.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Logical Images](https://appshunter.io/developer/348177524) | [World Health Organization](https://appshunter.io/developer/1462736279) |

## What reviewers say

### VisualDx

[App page](https://appshunter.io/ios/app/visualdx/id348177521)

**Currently charting:** #13 Top Grossing · Medical (US App Store)

This visual reference tool aids medical professionals in improving patient engagement and diagnostic accuracy. It utilizes AI and a vast image atlas to help build custom differentials, share patient-specific images, and access comprehensive diagnostic information. Earn continuing education credits while making better medical decisions.

**Highlights:** Build custom differentials, Engage patients with visual aids, Improve diagnostic accuracy, Access therapy and test options, Recognize infectious diseases, Earn CME credits

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Complete (1 Month) | $39.99 | per month |
| VisualDx Core Monthly | $39.99 | per month |
| Complete+DermExpert (1 Month) | $49.99 | per month |
| VisualDx Elite Monthly | $49.99 | per month |
| Add DermExpert (1 Year) | $99.99 | per year |
| Complete (1 Year) | $149.99 | per year |
| VisualDx Core Annual | $249.99 | per year |
| VisualDx Elite Annual | $299.99 | per year |
| Complete+DermExpert (1 Year) | $499.99 | per year |
| Add DermExpert (1 yr) | $99.99 | one-time |
| Complete (1 yr) | $399.99 | one-time |

**What reviewers like**

- 📸 Excellent clinical images and kodachromes
- 👍 User-friendly interface and easy navigation
- 🎓 Comprehensive differential diagnosis tool
- 📚 Detailed disease summaries and treatment information
- 🌍 Inclusive representation of skin of color

**What reviewers complain about**

- 💰 Expensive subscription cost
- ❌ Difficult subscription cancellation process
- 🐛 App crashes and performance issues
- 📱 Quiz feature laggy and unreliable
- 😤 Poor customer service responsiveness

**Reported bugs**

- App crashes when using quiz feature
- CME credit claiming functionality fails
- Subscription cancellation not processed
- Renewal charges despite cancellation requests
- Quiz unable to load properly

**Requested features**

- Make app free again (previously free)
- Simplify subscription cancellation in-app
- Improve quiz functionality for mobile
- Add quiz feature to desktop version
- Expand patient information handouts


### WHO UMD

[App page](https://appshunter.io/ios/app/who-umd/id1610130885)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VisualDx free?

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

### Is WHO UMD free?

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

### Do VisualDx or WHO UMD have ads?

Neither VisualDx nor WHO UMD shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*