# Merck Manual Professional vs Antimicrobial Guide

The clearest difference is update cadence: Antimicrobial Guide at every 3 weeks against Merck Manual Professional's every 4 months. Antimicrobial Guide also leads on rating (5.0 vs 4.8) and iOS requirement (7.0 vs 13.0). Merck Manual Professional's advantage is ratings volume (1.1K vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Antimicrobial Guide holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Merck Manual Professional has 1.1K ratings behind it against 2, so its average is the more settled of the two.

Merck Manual Professional ships an update every 4 months, Antimicrobial Guide every 3 weeks. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Merck Manual Professional | Antimicrobial Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (1.1K ratings)](https://appshunter.io/ios/app/merck-manual-professional/id331016312/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/antimicrobial-guide/id1032955474/reviews)** |
| Number of ratings | **1.1K** | 2 |
| Positive reviews | 91.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 196 MB | 1 MB |
| Requires iOS | 13.0 | **7.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Merck & Co Inc](https://appshunter.io/developer/334253467) | [Portable Databases](https://appshunter.io/developer/333398128) |

## What reviewers say

### Merck Manual Professional

[App page](https://appshunter.io/ios/app/merck-manual-professional/id331016312)

This medical reference app offers healthcare practitioners and students clear, practical explanations for thousands of conditions across major medical and surgical specialties. It includes photos, illustrations, instructional videos, drug information, quizzes, and case simulations to stay updated with the latest clinical information.

**Highlights:** Thousands of medical topics, Photos and illustrations, Instructional 'How to' videos, Drug reference information, Knowledge quizzes, Interactive case simulations

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 💯 Excellent medical resource
- 🔍 Comprehensive and up-to-date information
- 🎓 Valuable for medical professionals and students
- 🔍 Reliable and trusted source
- 🖥️ Great offline accessibility

**What reviewers complain about**

- 🐛 App crashes and freezes
- 🔍 Lack of search functionality
- 🔍 Outdated or missing content
- 🔍 Difficult navigation and organization

**Reported bugs**

- App crashes when searching for certain conditions
- Images and videos not loading properly
- Offline mode not working as expected

**Requested features**

- Add personalization features like notes, highlights, and flashcards
- Improve search functionality and relevance
- Provide more frequent content updates
- Enhance app stability and performance


### Antimicrobial Guide

[App page](https://appshunter.io/ios/app/antimicrobial-guide/id1032955474)

This app assists healthcare professionals in choosing the right antimicrobial treatments for patients. It displays recommended drug regimens based on local guidelines after a database is loaded. It's a convenient tool for distributing treatment guidelines.

**Highlights:** Select infection of interest, Display recommended drug regimens, Utilize local healthcare institution guidelines, Distribute empiric antimicrobial treatment guidelines, Convenient clinician tool

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

**In-app purchases:** none


## Frequently asked questions

### Is Merck Manual Professional free?

Merck Manual Professional is free to download, with no in-app purchases.

### Is Antimicrobial Guide free?

Antimicrobial Guide is free to download, with no in-app purchases.

### Which has better reviews, Merck Manual Professional or Antimicrobial Guide?

Antimicrobial Guide is rated higher. Merck Manual Professional averages 4.8 out of 5 from 1.1K ratings, while Antimicrobial Guide averages 5.0 from 2 ratings.

### Do Merck Manual Professional or Antimicrobial Guide have ads?

Neither Merck Manual Professional nor Antimicrobial Guide shows ads.

### Which is updated more often, Merck Manual Professional or Antimicrobial Guide?

Merck Manual Professional ships an update every 4 months, and Antimicrobial Guide every 3 weeks. Most recently, Merck Manual Professional was updated on November 1, 2026 and Antimicrobial Guide on October 29, 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.*