# Pacemaker vs MKSAP 19

The clearest difference is rating: MKSAP 19 at 4.1 against Pacemaker's 3.5. MKSAP 19 also leads on review sentiment (71% vs 40%). Pacemaker's advantage is update cadence (every 4 days vs every 2 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

MKSAP 19 holds the better App Store score, 4.1 against 3.5. Both are backed by a comparable volume of ratings — 54 and 37 respectively. Written reviews point the same way: 40% of Pacemaker's written reviews are positive against 71% of MKSAP 19's.

Pacemaker ships an update every 4 days, MKSAP 19 every 2 months. The most recent releases landed on September 29, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Pacemaker | MKSAP 19 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (54 ratings)](https://appshunter.io/ios/app/pacemaker-id/id1455009191/reviews) | **[4.1 (37 ratings)](https://appshunter.io/ios/app/mksap-19/id1577787036/reviews)** |
| Number of ratings | **54** | 37 |
| Positive reviews | 40.0% of reviews | **70.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Free | Free |
| Size | 20 MB | 423 MB |
| Requires iOS | **11.1** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [THE UNSUNG LLC](https://appshunter.io/developer/1472090130) | [American College of Physicians](https://appshunter.io/developer/371090673) |

## What reviewers say

### Pacemaker

[App page](https://appshunter.io/ios/app/pacemaker-id/id1455009191)

This application uses advanced deep learning to identify the manufacturer of pacemakers and defibrillators from X-ray images. It currently supports major brands like Boston Scientific, Biotronik, Medtronic, and St. Jude.

**Highlights:** AI-powered device identification, X-ray image analysis, Pacemaker and defibrillator detection, Supports major manufacturers, Deep-learning model

**Features:** macOS Compatibility

**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 Pacemaker free?

Pacemaker 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, Pacemaker or MKSAP 19?

MKSAP 19 is rated higher. Pacemaker averages 3.5 out of 5 from 54 ratings, while MKSAP 19 averages 4.1 from 37 ratings.

### Do Pacemaker or MKSAP 19 have ads?

Neither Pacemaker nor MKSAP 19 shows ads.

### Which is updated more often, Pacemaker or MKSAP 19?

Pacemaker ships an update every 4 days, and MKSAP 19 every 2 months. Most recently, Pacemaker was updated on September 29, 2026 and MKSAP 19 on September 26, 2026.

---

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