Pacemaker vs MKSAP 19
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pacemaker
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.
- AI-powered device identification
- X-ray image analysis
- Pacemaker and defibrillator detection
- Supports major manufacturers
- Deep-learning model
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Pacemaker-ID uses a deep-learning model to determine the manufacturer of a given pacemaker and defibrillator in an x-ray image. Currently, we support detection of: - Boston Scientific - Biotronik - Medtronic - St. Jude
MKSAP 19
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.
- 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
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This app supplements the online version and is included with the MKSAP 19 Digital, MKSAP 19 Complete Green, and MKSAP 19 Complete subscriptions. Simply log in with your ACP or MKSAP 19 username and password. If you need assistance setting up your account, visit ACP Online. Some functionality within the app requires an active internet connection. Your suggestions for future updates and enhanced features are welcome at mksap_editors@acponline.org. The new Medical Knowledge Self-Assessment Program® (MKSAP® 19) provides you with the most current and critical information in the core of internal medicine and its subspecialties so you can stay aware of what you need to know as a practicing physician in internal medicine today. MKSAP 19 consists of well-researched text sections and 1,200 exam-like multiple-choice questions along with hundreds of figures, charts, and tables to enhance your learning experience. MKSAP 19's original, high-quality questions comprise patient-based clinical scenarios based on the latest evidence. Each question will challenge your decision-making, help you discover areas of strength, and target areas for you to update or acquire new knowledge. This app enables subscribers to MKSAP 19 Digital, MKSAP 19 Complete Green, or MKSAP 19 Complete to read all of the text and answer all of the questions offline. When you are connected to the Internet, answers will sync automatically with the online version. The publisher of this app, the American College of Physicians, is the largest medical specialty organization in the United States with members in more than 145 countries worldwide. ACP membership includes 161,000 internal medicine physicians (internists), related subspecialists, and medical students. Internal medicine physicians are specialists who apply scientific knowledge and clinical expertise to the diagnosis, treatment, and compassionate care of adults across the spectrum from health to complex illness.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Pacemaker | MKSAP 19 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (54 ratings) | 4.1 (37 ratings) — better |
| Positive reviews | 40.0% of reviews | 70.6% of reviews — better |
| Number of ratings | 54 — better | 37 |
| Update frequency | Every 4 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.1 — better | 12.0 |
| Further details — not scored | ||
| Size | 20 MB | 423 MB |
| Age rating | 4+ | 17+ |
| Developer | THE UNSUNG LLC | American College of Physicians |
Customer experience
Pacemaker
MKSAP 19
In-app purchases
Pacemaker
No in-app purchases
MKSAP 19
No in-app purchases








