# MSD Manual Professional vs Si7a

The clearest difference is rating: MSD Manual Professional at 4.9 against Si7a's 4.0. MSD Manual Professional also leads on ratings volume (174 vs 5) and iOS requirement (13.0 vs 18.0). Si7a's advantage is update cadence (every 2 months vs every 4 months). 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.

MSD Manual Professional holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: MSD Manual Professional has 174 ratings behind it against 5, so its average is the more settled of the two.

MSD Manual Professional ships an update every 4 months, Si7a every 2 months. The most recent releases landed on November 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | MSD Manual Professional | Si7a |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (174 ratings)](https://appshunter.io/ios/app/msd-manual-professional/id1123678257/reviews)** | [4.0 (5 ratings)](https://appshunter.io/ios/app/si7a/id6467135254/reviews) |
| Number of ratings | **174** | 5 |
| Positive reviews | 87.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 193 MB | 43 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Merck Sharp & Dohme LLC](https://appshunter.io/developer/718617686) | [SMART MS SA](https://appshunter.io/developer/1639062164) |

## What reviewers say

### MSD Manual Professional

[App page](https://appshunter.io/ios/app/msd-manual-professional/id1123678257)

Access comprehensive medical information for healthcare professionals and students. This app provides detailed explanations of thousands of conditions, diagnostic options, and treatment strategies, updated regularly by medical experts. It includes photos, illustrations, and instructional videos for procedures and examinations.

**Highlights:** Thousands of medical topics, Photos and illustrations, Instructional videos, Quizzes for knowledge check, Medical news and commentary, Editorials by experts

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 📚 Comprehensive medical reference with extensive coverage
- 🆓 Completely free access to professional medical knowledge
- 📱 Offline functionality for use without internet
- 🎯 Concise and well-organized content for quick reference
- ⚡ Fast and efficient search capabilities

**What reviewers complain about**

- 🐛 Images and figures not displaying properly
- 🐛 App crashes or closes unexpectedly
- 🐛 Dark mode rendering issues with black screens
- 🐛 Navigation problems when returning from tables/links
- 🐛 Slow performance on some devices

**Reported bugs**

- Images and figures not showing in app
- App crashes on launch or during use
- Dark mode causes black screen display
- Navigation back button returns to search results instead of article
- Download interruption prevents app functionality

**Requested features**

- Russian language support (most requested)
- Italian language version
- French language translation
- Spanish language option
- German language support


### Si7a

[App page](https://appshunter.io/ios/app/si7a/id6467135254)

This platform streamlines medical record management and appointment booking for patients, healthcare professionals, and laboratories. It simplifies access to health information, automates reminders, and enhances the efficiency of care delivery and test result management.

**Highlights:** Online appointment booking, Access to medical history, Automatic appointment reminders, Patient record management, Test and analysis management, Secure data handling

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MSD Manual Professional free?

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

### Is Si7a free?

Si7a is free to download, with no in-app purchases.

### Which has better reviews, MSD Manual Professional or Si7a?

MSD Manual Professional is rated higher. MSD Manual Professional averages 4.9 out of 5 from 174 ratings, while Si7a averages 4.0 from 5 ratings.

### Do MSD Manual Professional or Si7a have ads?

Neither MSD Manual Professional nor Si7a shows ads.

### Which is updated more often, MSD Manual Professional or Si7a?

MSD Manual Professional ships an update every 4 months, and Si7a every 2 months. Most recently, MSD Manual Professional was updated on November 1, 2026 and Si7a on October 7, 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.*