Comparison

Pacemaker vs CorePendium

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • AI-powered device identification
  • X-ray image analysis
  • Pacemaker and defibrillator detection
  • Supports major manufacturers
  • Deep-learning model
Features
Read full description

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

About

CorePendium

This app provides a comprehensive, continuously updated, and peer-reviewed clinical reference for Emergency and Urgent Care Medicine. It features integrated multimedia, offline access, intuitive navigation, and medical calculators, making it an essential tool for medical professionals on the go.

Highlights
  • Expert-backed, continuously revised content
  • Integrated media library (ECGs, X-rays, videos, audio)
  • Offline access to all content
  • Intuitive navigation with Rapid Access and Deep Dive sections
  • Integrated medical calculators
  • Links to EM:RAP knowledge base content
Features
Read full description

The textbook is dead. Long live CorePendium! CorePendium is the first truly comprehensive, continuously updated, peer-reviewed, multimedia clinical reference for Emergency and Urgent Care Medicine. Download the CorePendium App and bring the best clinical reference text with you anywhere in the world, regardless of connectivity. With your EM:RAP account, the CorePendium App allows you to join over 65,000 members of the CorePendium community. The CorePendium App gives you… • EXPERT-BACKED CONTENT — Written, edited, and peer-reviewed by a team of over 800 leading academics and practitioners, every CorePendium chapter is continuously revised by leading experts in emergency medicine and beyond. • INTEGRATED MEDIA — Comprehensive learning requires more than just words. Dive into our constantly growing media library of ECG’s and X-rays, as well as expertly-produced videos and audio segments. Look, listen, and learn, all without leaving the CorePendium App. • OFFLINE MODE — With new chapters being added and updated frequently to reflect the latest literature and practice guidelines, the CorePendium App makes sure you always have the newest information at your fingertips, 24 hours a day. The app looks for updates to its offline database every time you’re active online, so that you have the answers you need, no matter what. Do you want access to our skillfully-shot procedure videos and expert commentary away from a wireless connection? You can choose to download our audio and video content to ensure access when you need it most. • INTUITIVE NAVIGATION — Designed to prioritize all of the crucial information and media needed for the critical patient, CorePendium’s ‹Rapid Access› section gives you the quick insights you’ll need at the bedside. If you are looking for more background, the ‹Deep Dive› section provides all the information you’ll need to know about a topic. Sleek chapter sidebars, internal searches, search filters, and curated tabs ensure you can find what you need when you need it. • MEDICAL CALCULATORS — Get all of the commonly used clinical scoring and decision tools you need, with important interpretation data compiled by some of medicine’s foremost experts just a thumb slide away. Our calculators are also integrated with the content that uses it most. • PART OF THE EM:RAP KNOWLEDGE BASE — CorePendium is just one piece of the EM:RAP universe. The CorePendium App takes full advantage of its special connection to the most listened to programs in Emergency and Urgent Care Medicine by integrating that content. With continuously updated links to video, conference content, and podcasts you’ll always get the most cutting-edge answers. • INTERNATIONAL — CorePendium is for the whole world. We have an international advisory board that aims to address emergency care for patients and practitioners in all of the various environments where it is practiced. • EDITORIAL INDEPENDENCE — CorePendium is written by clinicians for clinicians, without the support of advertising or industry. With the CorePendium App you just get the best information, current and expertly reviewed. • THE REFERENCE OF RECORD — Accessed millions of times, CorePendium is already the reference textbook used by residency training programs and frontline clinicians the world over.

Screenshots

Pacemaker2 screens
CorePendium4 screens

Verdict

The call

The clearest difference is rating: CorePendium at 4.9 against Pacemaker's 3.5. CorePendium also leads on review sentiment (62% vs 40%) and ratings volume (1.5K vs 62). Pacemaker's advantage is update cadence (every 4 days vs monthly) and monetization model (free vs freemium). On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

CorePendium holds the better App Store score, 4.9 against 3.5. That said, the two scores are not equally well evidenced: CorePendium has 1.5K ratings behind it against 62, so its average is the more settled of the two. Written reviews point the same way: 40% of Pacemaker's written reviews are positive against 62% of CorePendium's.

UpkeepUpdate frequency

Pacemaker ships an update every 4 days, CorePendium monthly. Both last shipped on October 24, 2026.

Scorecard6 real differences · 4 level
Pacemaker versus CorePendium: the parameters behind the verdict, then further details
ParameterPacemakerCorePendium
PriceFreeFree
Rating3.5 (62 ratings)4.9 (1.5K ratings) — better
Positive reviews40.0% of reviews61.5% of reviews — better
Number of ratings621.5K — better
Update frequencyEvery 4 days — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFreemium
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.1 — better15.1
Further details — not scored
Size20 MB49 MB
Age rating4+17+
DeveloperTHE UNSUNG LLCEM:RAP, Inc.

Customer experience

Pacemaker

All ratings53 ratings
Positive58.5%
Neutral5.7%
Negative35.8%
Written reviews25 reviews
Positive40.0%
Neutral8.0%
Negative52.0%

CorePendium

All ratings1,534 ratings
Positive98.1%
Neutral1.0%
Negative0.9%
Written reviews13 reviews
Positive61.5%
Neutral7.7%
Negative30.8%

Bugs and requests

Pacemaker

Not enough reviews yet to summarise bugs or requests.

CorePendium

Reported bugs

2 issues
  • Crashes on launch
  • Compatibility issues with older devices

Requested features

3 requests
  • iPad version
  • Ability to track progress and bookmark content
  • Video playback controls (speed, rewind)

In-app purchases

None

Pacemaker

No in-app purchases

None

CorePendium

No in-app purchases

Questions

Is Pacemaker free?
Pacemaker is free to download, with no in-app purchases.
Is CorePendium free?
CorePendium is free to download, with no in-app purchases.
Which has better reviews, Pacemaker or CorePendium?
CorePendium is rated higher. Pacemaker averages 3.5 out of 5 from 62 ratings, while CorePendium averages 4.9 from 1.5K ratings.
Do Pacemaker or CorePendium have ads?
Neither Pacemaker nor CorePendium shows ads.
Which is updated more often, Pacemaker or CorePendium?
Pacemaker ships an update every 4 days, and CorePendium monthly. Most recently, Pacemaker was updated on October 24, 2026 and CorePendium on October 24, 2026.

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