# VisualDx vs EBM Calculator

The clearest difference is rating: EBM Calculator at 5.0 against VisualDx's 4.4. EBM Calculator also leads on in-app purchases (none vs 10). VisualDx's advantage is update cadence (fortnightly vs every 3 months) and ratings volume (186 vs 3). On price, ads and device support there is nothing between them.

Both are free to download. VisualDx sells 10 in-app purchases, starting at $39.99 per month. EBM Calculator asks for nothing beyond the download.

EBM Calculator holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: VisualDx has 186 ratings behind it against 3, so its average is the more settled of the two.

VisualDx ships an update fortnightly, EBM Calculator every 3 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | VisualDx | EBM Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (186 ratings)](https://appshunter.io/ios/app/visualdx/id348177521/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ebm-calculator/id6737999201/reviews)** |
| Number of ratings | **186** | 3 |
| Positive reviews | 84.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Subscription | **Free** |
| Best chart rank | **#27** | — |
| Size | 220 MB | 14 MB |
| Requires iOS | **16.4** | 18.1 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Logical Images](https://appshunter.io/developer/348177524) | [David Stewart](https://appshunter.io/developer/1778788927) |

## What reviewers say

### VisualDx

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

**Currently charting:** #27 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


### EBM Calculator

[App page](https://appshunter.io/ios/app/ebm-calculator/id6737999201)

This app helps medical professionals quickly interpret study results. It offers calculators for effect size, diagnostic test accuracy, and post-test probability, along with lessons and tutorials on evidence-based medicine.

**Highlights:** Effect Size Calculator, Diagnostic Test Accuracy Calculator, Post-Test Probability Calculator, Fagan Nomogram visualization, Save, Search, and Share results, Evidence-Based Medicine lessons, iCloud Sync

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VisualDx free?

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

### Is EBM Calculator free?

EBM Calculator is free to download, with no in-app purchases.

### Which has better reviews, VisualDx or EBM Calculator?

EBM Calculator is rated higher. VisualDx averages 4.4 out of 5 from 186 ratings, while EBM Calculator averages 5.0 from 3 ratings.

### Do VisualDx or EBM Calculator have ads?

Neither VisualDx nor EBM Calculator shows ads.

### Which is updated more often, VisualDx or EBM Calculator?

VisualDx ships an update fortnightly, and EBM Calculator every 3 months. Most recently, VisualDx was updated on November 6, 2026 and EBM Calculator on November 4, 2026.

---

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