ACP MKSAP vs PE Classifier
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ACP MKSAP
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.
- 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
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This app supplements the online version and is included with your ACP MKSAP subscription. Simply log in with your ACP or ACP MKSAP 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 ACP Medical Knowledge Self-Assessment Program℠ (ACP MKSAP℠) 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. ACP MKSAP consists of well-researched text sections and thousands of exam-like multiple-choice questions along with hundreds of figures, charts, and tables to enhance your learning experience. ACP MKSAP'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 ACP MKSAP subscribers 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. Subscriber License Agreement: https://mksap.acponline.org/license
PE Classifier
This educational reference tool helps medical professionals and students understand and apply the latest acute pulmonary embolism classification system. It features interactive diagrams, a built-in checklist, and direct links to source guidelines for comprehensive learning.
- Full Category A-E classification with sub-stages
- Interactive visual diagrams
- Built-in HESTIA checklist
- Optional local case log
- Direct link to source guideline
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PEClassifier is an educational reference tool designed to help medical students, residents, and clinical trainees learn and apply the 2026 AHA/ACC/ACCP/ACEP/CHEST acute pulmonary embolism classification system. LEARN THE FRAMEWORK The 2026 guideline introduced a comprehensive Category A–E classification system for acute PE severity. PEClassifier walks you through every category and sub-stage — B1/B2, C1–C3, D1–D2, and E1–E2 — with interactive diagrams that show how clinical criteria map to each classification. Understand not just the answer, but the reasoning behind it. Utilizes validated 11-item HESTIA checklist used to evaluate outpatient management eligibility — a key concept tested on boards and applied throughout clinical training. FEATURES - Full Category A–E classification with all sub-stages and R respiratory modifier - Interactive visual diagrams for every classification category - Built-in HESTIA checklist with all 11 validated criteria - Optional case log for self-study and review — saved locally on your device only, never transmitted anywhere - Direct link to the 2026 source guideline for reference and citation PRIVACY PEClassifier does not collect, transmit, or store any personally identifiable information. Any case log entries you save are stored locally on your device only, are entirely non-identifying, and are never shared with or sold to any third party. Uninstalling the app permanently removes all saved data. WHO IT'S FOR PEClassifier is intended for licensed healthcare professionals, medical students, and clinical trainees. It is not directed at children and is designed exclusively for educational and professional reference use. DISCLAIMER PEClassifier is an educational and reference tool. It is not a diagnostic device and is not intended to replace clinical judgment, established diagnostic protocols, or consultation with a qualified healthcare provider. A disclaimer is displayed within the app on a recurring basis to reinforce this.
Screenshots
Verdict
The clearest difference is rating: PE Classifier at 5.0 against ACP MKSAP's 4.2. PE Classifier also leads on in-app purchases (none vs 1). ACP MKSAP's advantage is update cadence (every 10 days vs monthly) and ratings volume (16 vs 1). On price, ads and device support 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. ACP MKSAP sells 1 in-app purchase, starting at $999.99 per year. PE Classifier asks for nothing beyond the download.
PE Classifier holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: ACP MKSAP has 16 ratings behind it against 1, so its average is the more settled of the two.
ACP MKSAP ships an update every 10 days, PE Classifier monthly. The most recent releases landed on October 7, 2026 and September 18, 2026 respectively.
| Parameter | ACP MKSAP | PE Classifier |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (16 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 57.1% of reviews | — |
| Number of ratings | 16 — better | 1 |
| Update frequency | Every 10 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 542 MB | 24 MB |
| Age rating | 17+ | 17+ |
| Developer | American College of Physicians | Dawwod George |
Customer experience
ACP MKSAP
PE Classifier
In-app purchases
ACP MKSAP
- Non-member in-app price$999.991 Year
PE Classifier
No in-app purchases









