# Pacemaker vs ACP MKSAP

The clearest difference is rating: ACP MKSAP at 4.2 against Pacemaker's 3.5. ACP MKSAP also leads on review sentiment (57% vs 40%). Pacemaker's advantage is in-app purchases (none vs 1) and update cadence (every 4 days vs every 10 days). On price, ads and device support there is nothing between them.

Both are free to download. ACP MKSAP sells 1 in-app purchase, starting at $999.99 per year. Pacemaker asks for nothing beyond the download.

ACP MKSAP holds the better App Store score, 4.2 against 3.5. Both are backed by a comparable volume of ratings — 54 and 16 respectively. Written reviews point the same way: 40% of Pacemaker's written reviews are positive against 57% of ACP MKSAP's.

Pacemaker ships an update every 4 days, ACP MKSAP every 10 days. The most recent releases landed on September 29, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Pacemaker | ACP MKSAP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (54 ratings)](https://appshunter.io/ios/app/pacemaker-id/id1455009191/reviews) | **[4.2 (16 ratings)](https://appshunter.io/ios/app/acp-mksap/id6739636797/reviews)** |
| Number of ratings | **54** | 16 |
| Positive reviews | 40.0% of reviews | **57.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 10 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 20 MB | 542 MB |
| Requires iOS | **11.1** | 13.0 |
| 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


### ACP MKSAP

[App page](https://appshunter.io/ios/app/acp-mksap/id6739636797)

Access comprehensive internal medicine knowledge and practice exam-style questions offline. This app syncs your progress with the online version when connected to the internet. It's designed for physicians to stay updated on the latest evidence and enhance their clinical decision-making skills.

**Highlights:** Offline access to text and questions, Thousands of exam-like multiple-choice questions, Patient-based clinical scenarios, Syncs progress with online version, Includes figures, charts, and tables, Targets knowledge gaps

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Non-member in-app price | $999.99 | per year |


## Frequently asked questions

### Is Pacemaker free?

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

### Is ACP MKSAP free?

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

### Which has better reviews, Pacemaker or ACP MKSAP?

ACP MKSAP is rated higher. Pacemaker averages 3.5 out of 5 from 54 ratings, while ACP MKSAP averages 4.2 from 16 ratings.

### Do Pacemaker or ACP MKSAP have ads?

Neither Pacemaker nor ACP MKSAP shows ads.

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

Pacemaker ships an update every 4 days, and ACP MKSAP every 10 days. Most recently, Pacemaker was updated on September 29, 2026 and ACP MKSAP on September 26, 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.*