# VisualDx vs Top Derm

The clearest difference is in-app purchases: Top Derm at none against VisualDx's 11. VisualDx's advantage is ads (none vs shown) and review sentiment (84% vs 60%). On price, rating, device support and iOS requirement there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.4 for VisualDx against 4.5 for Top Derm. Both are backed by a comparable volume of ratings — 186 and 59 respectively. Written reviews are what separate them: 84% of VisualDx's written reviews are positive against 60% of Top Derm's.

VisualDx ships an update fortnightly, Top Derm every 6 weeks. The most recent releases landed on September 23, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | VisualDx | Top Derm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (186 ratings)](https://appshunter.io/ios/app/visualdx/id348177521/reviews) | **[4.5 (59 ratings)](https://appshunter.io/ios/app/top-derm/id1505608766/reviews)** |
| Number of ratings | **186** | 59 |
| Positive reviews | **84.3% of reviews** | 60.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Subscription | **Free with in-app purchases** |
| Best chart rank | **#11** | — |
| Size | 226 MB | 248 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Logical Images](https://appshunter.io/developer/348177524) | [Relevate Health Group, LLC](https://appshunter.io/developer/1786280213) |

## 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


### Top Derm

[App page](https://appshunter.io/ios/app/top-derm/id1505608766)

This game is designed for dermatologists by dermatologists, offering a fun and challenging way to learn and identify skin disorders. It features medically accurate imagery and neuroscience-based game mechanics to enhance knowledge retention.

**Highlights:** Medically accurate derm imagery, Neuroscience-based game mechanics, Earn CME credits, Wide variety of dermatology topics, Customizable topic selection, High-resolution imagery with zoom, Personal expertise tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VisualDx free?

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

### Is Top Derm free?

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

### Which has better reviews, VisualDx or Top Derm?

Top Derm is rated higher. VisualDx averages 4.4 out of 5 from 186 ratings, while Top Derm averages 4.5 from 59 ratings.

### Do VisualDx or Top Derm have ads?

Top Derm shows ads; VisualDx does not.

### Which is updated more often, VisualDx or Top Derm?

VisualDx ships an update fortnightly, and Top Derm every 6 weeks. Most recently, VisualDx was updated on September 23, 2026 and Top Derm on June 1, 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.*