# VisualDx vs WikEM

The clearest difference is monetization model: WikEM at free with in-app purchases against VisualDx's subscription. WikEM also leads on rating (4.8 vs 4.4) and ratings volume (4.7K vs 186). VisualDx's advantage is review sentiment (84% vs 54%) and chart position (#11 vs unranked). On price, ads, in-app purchases 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 and WikEM sells 10 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

WikEM holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: WikEM has 4.7K ratings behind it against 186, so its average is the more settled of the two. Written reviews complicate that: 84% of VisualDx's written reviews are positive against 54% of WikEM's, so the app with the better star average is not the one people write more warmly about.

VisualDx ships an update fortnightly, WikEM every 5 days. Both last shipped on September 23, 2026.

## The numbers

| Metric | VisualDx | WikEM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (186 ratings)](https://appshunter.io/ios/app/visualdx/id348177521/reviews) | **[4.8 (4.7K ratings)](https://appshunter.io/ios/app/wikem/id576405449/reviews)** |
| Number of ratings | 186 | **4.7K** |
| Positive reviews | **84.3% of reviews** | 54.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Subscription | **Free with in-app purchases** |
| Best chart rank | **#11** | — |
| Size | 226 MB | 157 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Logical Images](https://appshunter.io/developer/348177524) | [OpenEM Foundation](https://appshunter.io/developer/766470023) |

## What reviewers say

### VisualDx

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

**Currently charting:** #11 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


### WikEM

[App page](https://appshunter.io/ios/app/wikem/id576405449)

This app provides a continuously updated wiki and database of emergency medicine knowledge for physicians. Access key information offline for rapid reference during daily practice. An in-app subscription unlocks advanced AI-powered questions, favorites, and history features.

**Highlights:** Emergency medicine knowledge database, Continuously updated content, Offline access, AI-powered questions (subscription), Favorites and history (subscription)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WikEM AI Search | $1.99 | per month |
| Premium Features | $4.99 | per year |
| Personal Notes | $0.99 | one-time |
| Favorites and Lists | $5.99 | one-time |
| History and Favorites | $9.99 | one-time |
| WikEM Russian Content | $29.99 | one-time |
| WikEM Italian Content | $29.99 | one-time |
| WikEM Polish Content | $29.99 | one-time |
| WikEM Hindi Content | $29.99 | one-time |
| WikEM Turkish Content | $29.99 | one-time |

**What reviewers like**

- 💡 Useful and concise information
- 🚀 Great resource for quick reference
- 👍 Helpful for medical professionals

**What reviewers complain about**

- 🐛 Frequent login and account issues
- 🐛 App crashes and database loading problems
- 🐛 Compatibility issues with newer devices
- 🔋 High battery consumption

**Reported bugs**

- Login screen freezes
- Incompatible with older devices
- Broken hyperlinks and charts
- Search function not working as expected

**Requested features**

- Dark mode support
- Ability to save favorites and customize the app
- Improved search functionality
- Regular content updates


## Frequently asked questions

### Is VisualDx free?

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

### Is WikEM free?

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

### Which has better reviews, VisualDx or WikEM?

WikEM is rated higher. VisualDx averages 4.4 out of 5 from 186 ratings, while WikEM averages 4.8 from 4.7K ratings.

### Do VisualDx or WikEM have ads?

Neither VisualDx nor WikEM shows ads.

### Which is updated more often, VisualDx or WikEM?

VisualDx ships an update fortnightly, and WikEM every 5 days. Most recently, VisualDx was updated on September 23, 2026 and WikEM on September 23, 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.*