Comparison

QuickEM vs CorePendium

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

Head to head
About

QuickEM

This emergency medicine reference app provides clinicians with instant access to critical information, including differentials, treatments, and validated medical calculators. It's designed for rapid lookup of ED-specific care, organized by chief complaints and clinical categories, and works completely offline.

Highlights
  • 80+ chief complaint topics
  • 90+ medical calculators
  • Offline access
  • No login or ads
  • Adult and pediatric coverage
  • Evidence-based content
  • Customizable favorites
Features
Currently charting
Read full description

The Essential Emergency Medicine Reference Trusted by Clinicians QuickEM is the comprehensive bedside companion designed by emergency physicians for emergency physicians. Whether you're a medical student on your first ED rotation or an attending managing a busy department, QuickEM delivers the critical information you need—instantly. Built for Real Emergency Medicine • Over 80 chief complaint topics with differentials, history, tests, and treatments focused on ED-specific care • Over 90 validated medical calculators / tools • No login required • Zero fluff—only ED-relevant information Organized by How You Think • Chief complaints structured by presentation • Calculators grouped by clinical category • Smart search finds tools • Customizable favorites list for your go-to references Trusted by Every Level • Medical Students: Essential differentials and workup basics • Residents: Quick access to decision rules and scoring systems • Attendings: Rapid reference for less common presentations and 2nd brain refreshers Key Features: • Complete offline access—works without internet • No ads, no subscriptions, no account required • Covers adult and pediatric emergency medicine • Includes trauma protocols and resuscitation guides • Evidence-based content with source citations • Professional medical illustrations and ECG examples Content Highlights: • Cardiovascular: HEART Score, CHADS2-VASc, Wells Criteria • Neurological: NIHSS, Canadian Head CT Rules, HINTS Exam • Trauma: NEXUS, Canadian C-Spine, PECARN • Pediatrics: PEDS Vitals, Croup Score, Bronchiolitis • Toxicology: Rumack-Matthew, CIWA-Ar, Anion Gap • And more! Developed by practicing emergency physicians who understand what you need at 3 AM with multiple critical patients. QuickEM is designed to be the fastest way to look up the info you need. This app is designed exclusively for medical professionals and students. Not intended for patient or public use.

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

QuickEM4 screens
CorePendium4 screens

Verdict

The call

The clearest difference is price: CorePendium at Free against QuickEM's $9.99. CorePendium also leads on in-app purchases (none vs 1) and ratings volume (1.5K vs 10). QuickEM's advantage is review sentiment (91% vs 62%) and chart position (#23 vs unranked). On ads, device support and iOS requirement 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

CorePendium is free to download; QuickEM costs $9.99 up front. QuickEM sells 1 one-off in-app purchase. CorePendium asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CorePendium holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: CorePendium has 1.5K ratings behind it against 10, so its average is the more settled of the two. Written reviews complicate that: 91% of QuickEM's written reviews are positive against 62% of CorePendium's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

QuickEM ships an update every 2 months, CorePendium monthly. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

Scorecard8 real differences · 3 level
QuickEM versus CorePendium: the parameters behind the verdict, then further details
ParameterQuickEMCorePendium
Price$9.99Free — better
Rating4.6 (10 ratings)4.9 (1.5K ratings) — better
Positive reviews90.9% of reviews — better61.5% of reviews
Number of ratings101.5K — better
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFreemium — better
Best chart rank#23 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size78 MB49 MB
Age rating17+17+
DeveloperDirkes Medical, PLLCEM:RAP, Inc.

Customer experience

QuickEM

All ratings10 ratings
Positive90.0%
Neutral0.0%
Negative10.0%
Written reviews11 reviews
Positive90.9%
Neutral9.1%
Negative0.0%

CorePendium

All ratings1,530 ratings
Positive98.1%
Neutral1.0%
Negative0.9%
Written reviews13 reviews
Positive61.5%
Neutral7.7%
Negative30.8%

Bugs and requests

QuickEM

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

1 purchases

QuickEM

One-time1
  • Premium Features$2.99
None

CorePendium

No in-app purchases

Questions

Is QuickEM free?
QuickEM costs $9.99, and also offers in-app purchases.
Is CorePendium free?
CorePendium is free to download, with no in-app purchases.
Which has better reviews, QuickEM or CorePendium?
CorePendium is rated higher. QuickEM averages 4.6 out of 5 from 10 ratings, while CorePendium averages 4.9 from 1.5K ratings.
Do QuickEM or CorePendium have ads?
Neither QuickEM nor CorePendium shows ads.
Which is updated more often, QuickEM or CorePendium?
QuickEM ships an update every 2 months, and CorePendium monthly. Most recently, QuickEM was updated on October 8, 2026 and CorePendium on October 11, 2026.

Other comparisons