WikEM vs CorePendium
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WikEM
This app provides a continuously updated wiki and database of emergency medicine knowledge for physicians. Access key information offline for rapid reference during daily practice. An in-app subscription unlocks advanced AI-powered questions, favorites, and history features.
- Emergency medicine knowledge database
- Continuously updated content
- Offline access
- AI-powered questions (subscription)
- Favorites and history (subscription)
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WikEM is an online wiki and database of emergency medicine knowledge to assist physicians with their daily practice. The content is continuously updated from WikEM.org allowing for rapid reference of key information. The content is available offline with this mobile application. WikEM is intended for clinicians only and not directly for patients. In app subscription purchases: *The in-app purchase unlocks unlimited natural language questions using our AI and also favorites and history features • Payment will be charged to iTunes Account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable WikEM terms of use: wikem.org/wiki/WikEM:Terms_of_Use
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.
- 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
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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
Verdict
The clearest difference is in-app purchases: CorePendium at none against WikEM's 10. WikEM's advantage is update cadence (every 5 days vs monthly) and ratings volume (4.7K vs 1.5K). On price, rating, review sentiment and ads 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. WikEM sells 10 in-app purchases, starting at $1.99 per month. CorePendium asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for WikEM against 4.9 for CorePendium. Both are backed by a comparable volume of ratings — 4.7K and 1.5K respectively. Written reviews are what separate them: 54% of WikEM's written reviews are positive against 62% of CorePendium's.
WikEM ships an update every 5 days, CorePendium monthly. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.
| Parameter | WikEM | CorePendium |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4.7K ratings) | 4.9 (1.5K ratings) — better |
| Positive reviews | 54.1% of reviews | 61.5% of reviews — better |
| Number of ratings | 4.7K — better | 1.5K |
| Update frequency | Every 5 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 157 MB | 49 MB |
| Age rating | 17+ | 17+ |
| Developer | OpenEM Foundation | EM:RAP, Inc. |
Customer experience
WikEM
CorePendium
User reviews
WikEM
From 4.7K App Store ratingsWhat we love
- 💡 Useful and concise information
- 🚀 Great resource for quick reference
- 👍 Helpful for medical professionals
Room to improve
- 🐛 Frequent login and account issues
- 🐛 App crashes and database loading problems
- 🐛 Compatibility issues with newer devices
- 🔋 High battery consumption
CorePendium
From 1.5K App Store ratingsWhat we love
- 🚀 Great resource
- 👍 Excellent and usable app
- 👍 Terrific point of care resource
- 👍 Invaluable for EM residents
Room to improve
- 🔍 Lacking search functionality
- 🐛 Crashes frequently
- 🔍 Poor indexing and content organization
Bugs and requests
WikEM
Reported bugs
4 issues- Login screen freezes
- Incompatible with older devices
- Broken hyperlinks and charts
- Search function not working as expected
Requested features
4 requests- Dark mode support
- Ability to save favorites and customize the app
- Improved search functionality
- Regular content updates
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
WikEM
- WikEM AI Search$1.991 Month
- Premium Features$4.991 Year
- Personal Notes$0.99
- Favorites and Lists$5.99
- History and Favorites$9.99
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- WikEM Russian Content$29.99
- WikEM Italian Content$29.99
- WikEM Polish Content$29.99
- WikEM Hindi Content$29.99
- WikEM Turkish Content$29.99
CorePendium
No in-app purchases






