# VisualDx vs Sanford Guide Antimicrobial

The clearest difference is rating: Sanford Guide Antimicrobial at 4.8 against VisualDx's 4.4. Sanford Guide Antimicrobial also leads on ratings volume (1.9K vs 186). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. VisualDx sells 11 in-app purchases, starting at $39.99 per month and Sanford Guide Antimicrobial sells 3 in-app purchases, starting at $4.99 per year. Whichever you choose, the download price is not the number that matters.

Sanford Guide Antimicrobial holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Sanford Guide Antimicrobial has 1.9K ratings behind it against 186, so its average is the more settled of the two. Written reviews split almost evenly too, at 84% and 85% positive.

VisualDx ships an update fortnightly, Sanford Guide Antimicrobial every 3 weeks. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | VisualDx | Sanford Guide Antimicrobial |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (186 ratings)](https://appshunter.io/ios/app/visualdx/id348177521/reviews) | **[4.8 (1.9K ratings)](https://appshunter.io/ios/app/sanford-guide-antimicrobial/id863196620/reviews)** |
| Number of ratings | 186 | **1.9K** |
| Positive reviews | 84.3% of reviews | **84.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Subscription | Subscription |
| Best chart rank | #10 | **#8** |
| Size | 226 MB | 44 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Logical Images](https://appshunter.io/developer/348177524) | [Antimicrobial Therapy, Inc.](https://appshunter.io/developer/443442554) |

## What reviewers say

### VisualDx

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

**Currently charting:** #10 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


### Sanford Guide Antimicrobial

[App page](https://appshunter.io/ios/app/sanford-guide-antimicrobial/id863196620)

**Currently charting:** #8 Top Grossing · Medical (US App Store)

Provides clinicians with concise, evidence-based treatment guidance for infectious diseases. Features interactive tools like spectra charts, drug interaction checkers, and dosing calculators to support rapid decision-making in fast-paced medical settings.

**Highlights:** Clinically actionable answers, Institutionally diverse editorial team, Constant updates, Interactive antibacterial spectra chart, Drug-drug interaction checker, Trustworthy dosing calculators

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| U.S. Vaccine Guidelines | $4.99 | per year |
| Sanford Guide | $39.99 | per year |
| Sanford Guide All Access | $79.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick access to information
- 💡 Helpful charts and tables
- 🔍 Comprehensive coverage of infections and treatments
- 📚 Up-to-date content and frequent updates

**What reviewers complain about**

- 🐛 Occasional crashes or freezing
- ⏱️ Slow search function
- 💰 Expensive subscription model
- 🔒 Login issues and subscription verification problems

**Reported bugs**

- App freezing or closing unexpectedly
- Login and subscription verification problems
- Corrupted passwords and inability to reset

**Requested features**

- Side-by-side antibiotic susceptibility comparison
- Offline access to content
- Improved navigation and UI


## Frequently asked questions

### Is VisualDx free?

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

### Is Sanford Guide Antimicrobial free?

Sanford Guide Antimicrobial is free to download, with in-app purchases available.

### Which has better reviews, VisualDx or Sanford Guide Antimicrobial?

Sanford Guide Antimicrobial is rated higher. VisualDx averages 4.4 out of 5 from 186 ratings, while Sanford Guide Antimicrobial averages 4.8 from 1.9K ratings.

### Do VisualDx or Sanford Guide Antimicrobial have ads?

Neither VisualDx nor Sanford Guide Antimicrobial shows ads.

### Which is updated more often, VisualDx or Sanford Guide Antimicrobial?

VisualDx ships an update fortnightly, and Sanford Guide Antimicrobial every 3 weeks. Most recently, VisualDx was updated on September 23, 2026 and Sanford Guide Antimicrobial on September 24, 2026.

### Which is more popular, VisualDx or Sanford Guide Antimicrobial?

VisualDx currently peaks at #10 in the App Store charts, and Sanford Guide Antimicrobial at #8. Chart position reflects recent download velocity rather than total install base.

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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.*