# Pneumotox. vs MKSAP 19

The clearest difference is rating: Pneumotox. at 4.9 against MKSAP 19's 4.1. MKSAP 19's advantage is update cadence (every 2 months vs every 42 months) and review sentiment (71% vs 50%). 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.

Pneumotox. holds the better App Store score, 4.9 against 4.1. That said, the two scores are not equally well evidenced: MKSAP 19 has 38 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 50% of Pneumotox.'s written reviews are positive against 71% of MKSAP 19's, so the app with the better star average is not the one people write more warmly about.

Pneumotox. ships an update every 42 months, MKSAP 19 every 2 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Pneumotox. | MKSAP 19 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/pneumotox/id495707401/reviews)** | [4.1 (38 ratings)](https://appshunter.io/ios/app/mksap-19/id1577787036/reviews) |
| Number of ratings | 7 | **38** |
| Positive reviews | 50.0% of reviews | **70.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 48 MB | 423 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Philippe Camus](https://appshunter.io/developer/1438857331) | [American College of Physicians](https://appshunter.io/developer/371090673) |

## What reviewers say

### Pneumotox.

[App page](https://appshunter.io/ios/app/pneumotox/id495707401)

This app aids in diagnosing respiratory and cardiac diseases suspected of being drug-induced. It provides extensive information and bibliography from over 35,000 reviewed references, organized by causative drugs and respiratory patterns. It helps assess drug causality and offers diagnostic prompts.

**Highlights:** Diagnose drug-induced respiratory diseases, Extensive bibliography from 35,000+ references, Organized by causative drugs and respiratory patterns, Drug causality assessment tool, Diagnostic prompts and Naranjo scale integration, Information on various drug administration routes

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

**In-app purchases:** none


### MKSAP 19

[App page](https://appshunter.io/ios/app/mksap-19/id1577787036)

This medical education app provides access to current information in internal medicine and subspecialties. It includes exam-like questions and patient-based clinical scenarios to help physicians assess and update their knowledge. Offline access to content is available for subscribers.

**Highlights:** Current internal medicine information, 1,200 exam-like multiple-choice questions, Patient-based clinical scenarios, Offline content access, Syncs with online version, Enhances learning with figures, charts, and tables

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Pneumotox. free?

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

### Is MKSAP 19 free?

MKSAP 19 is free to download, with no in-app purchases.

### Which has better reviews, Pneumotox. or MKSAP 19?

Pneumotox. is rated higher. Pneumotox. averages 4.9 out of 5 from 7 ratings, while MKSAP 19 averages 4.1 from 38 ratings.

### Do Pneumotox. or MKSAP 19 have ads?

Neither Pneumotox. nor MKSAP 19 shows ads.

### Which is updated more often, Pneumotox. or MKSAP 19?

Pneumotox. ships an update every 42 months, and MKSAP 19 every 2 months. Most recently, Pneumotox. was updated on November 6, 2026 and MKSAP 19 on November 4, 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.*