# VisualDx vs Brain & Nervous System Pro III

The clearest difference is price: VisualDx at Free against Brain & Nervous System Pro III's $9.99. VisualDx also leads on update cadence (fortnightly vs every 6 months) and review sentiment (84% vs 59%). Brain & Nervous System Pro III's advantage is in-app purchases (none vs 10) and iOS requirement (9.3 vs 16.4). On rating, ratings volume, ads and device support there is nothing between them.

VisualDx is free to download; Brain & Nervous System Pro III costs $9.99 up front. VisualDx sells 10 in-app purchases, starting at $39.99 per month. Brain & Nervous System Pro III asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.4 for VisualDx against 4.3 for Brain & Nervous System Pro III. Both are backed by a comparable volume of ratings — 186 and 94 respectively. Written reviews are what separate them: 84% of VisualDx's written reviews are positive against 59% of Brain & Nervous System Pro III's.

VisualDx ships an update fortnightly, Brain & Nervous System Pro III every 6 months. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | VisualDx | Brain & Nervous System Pro III |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.4 (186 ratings)](https://appshunter.io/ios/app/visualdx/id348177521/reviews)** | [4.3 (94 ratings)](https://appshunter.io/ios/app/brain-and-nervous-system-pro-iii/id451427448/reviews) |
| Number of ratings | **186** | 94 |
| Positive reviews | **84.3% of reviews** | 58.9% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 months |
| Monetization | Subscription | **Paid** |
| Best chart rank | **#19** | — |
| Size | 220 MB | 784 MB |
| Requires iOS | 16.4 | **9.3** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 17+ | 4+ |
| Developer | [Logical Images](https://appshunter.io/developer/348177524) | [3D4Medical from Elsevier](https://appshunter.io/developer/315902958) |

## What reviewers say

### VisualDx

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

**Currently charting:** #19 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 (10)**

| 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 |
| 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


### Brain & Nervous System Pro III

[App page](https://appshunter.io/ios/app/brain-and-nervous-system-pro-iii/id451427448)

Explore the human brain and nervous system with detailed 3D models, interactive features, and functional animations. Learn about anatomy, disease states, and neurobiology through quizzes and shareable drawings.

**Highlights:** 360-degree 3D rotation of brain and nervous system, Tri-planar slicing for detailed views, Functional and disease state animations, 728 labeled anatomical structures with audio, Two quiz types (drag and drop, multiple choice), Layer mixing for comparison, Public notes and graphical hints

**In-app purchases:** none

**What reviewers like**

- 🎨 High-quality, vibrant 3D graphics and rendering
- 🧠 Excellent visualization of brain anatomy and spatial relationships
- 🔄 Multiple viewing planes and layer transparency options
- ✏️ Ability to add custom pins and personal notes
- 🎓 Valuable educational tool for medical and anatomy students

**What reviewers complain about**

- 🐛 Frequent freezing and performance issues
- 📉 Poor image quality when zoomed in
- 🔍 Limited search and navigation functionality
- 📊 Insufficient anatomical detail for advanced learners
- 🎮 Choppy and unresponsive touch controls

**Reported bugs**

- App crashes and freezes frequently
- Incompatibility with iOS 11 and newer versions
- 32-bit compatibility issues on newer devices
- Download functionality not working
- Help section displays blank screen with music only

**Requested features**

- Multiple cross-sectional slices in each plane (currently only 1-3)
- More detailed spinal cord anatomy and cross-sections
- Additional brainstem structures and detailed sections
- Functional information about nerves and their effects
- More animations with narration and audio explanations


## Frequently asked questions

### Is VisualDx free?

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

### Is Brain & Nervous System Pro III free?

Brain & Nervous System Pro III costs $9.99, with no in-app purchases.

### Which has better reviews, VisualDx or Brain & Nervous System Pro III?

VisualDx is rated higher. VisualDx averages 4.4 out of 5 from 186 ratings, while Brain & Nervous System Pro III averages 4.3 from 94 ratings.

### Do VisualDx or Brain & Nervous System Pro III have ads?

Neither VisualDx nor Brain & Nervous System Pro III shows ads.

### Which is updated more often, VisualDx or Brain & Nervous System Pro III?

VisualDx ships an update fortnightly, and Brain & Nervous System Pro III every 6 months. Most recently, VisualDx was updated on November 6, 2026 and Brain & Nervous System Pro III on November 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.*