# 12 Lead ECG Challenge > Interactive ECG interpretation training app for medical professionals. (iPhone/iPad app by Limmer Creative.) - Source: https://appshunter.io/ios/app/12-lead-ecg-challenge/id461149429 (this page in markdown: same URL + `.md`) - Developer: [Limmer Creative](https://appshunter.io/developer/387423724) - Category: Medical, Health & Fitness - Price: $5.99 - Rating: 3.30/5 from 4 App Store ratings · 16 written reviews indexed - Age rating: 17+ - Requires: iOS 17.6 · 49 MB - Languages: American English - Released: 2011-09-06 - Data updated: 2026-08-24 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/12-lead-ecg-challenge/id461149429/reviews.md ## What is 12 Lead ECG Challenge? Master 12-Lead ECG Interpretation with Confidence Sharpen your ECG interpretation skills with 12-Lead ECG Challenge—the ultimate tool for EMS providers, nurses, and physicians. Created by Tom Bouthillet, renowned ECG expert and blogger, this app delivers 180 real-world 12-lead ECGs to help you build accuracy, speed, and confidence in identifying critical cardiac conditions. Key Features: • Real patient cases with clinically obtained 12-leads alongside actual patient complaints. • Wide range of pathologies, including acute STEMI, STEMI mimics, electrolyte imbalances, and more. • Interactive learning with zoom and move functionality for easy ECG examination on phones, tablets, and computers. • Expert explanations with detailed rationale and superimposed highlights to break down key findings. • Customized practice with options to review 5, 10, or 20 cases at a time and exclude mastered ECGs for efficient study. Perfect for cath lab activation teams, EMS, emergency medicine, and cardiology professionals, this app ensures you're prepared for high-stakes, real-world decisions. Download now and take your ECG interpretation to the next level! ## Key features - Real patient 12-lead ECG cases - Wide range of cardiac pathologies - Interactive ECG examination - Expert explanations and rationale - Customized practice sessions - Zoom and move functionality ## Chart rankings - #98 in Top Paid · Medical (US App Store) ## Recent user reviews (10 of 16) All indexed reviews: https://appshunter.io/ios/app/12-lead-ecg-challenge/id461149429/reviews.md ### 1/5 — Tech issues *2023-11-06* Unfortunately I purchased this to help prepare with studies and it frequently glitches/ won’t open. I’ve been able to access the content 3 times prior, now it just shows a blank screen. Although affordable, I’d suggest another app. ### 2/5 — Just ok *2017-08-28* This is not nearly as detailed as I hoped it would be. It gives only a brief description of the 12 leads, and doesn't delve into the meaning of them. For example, one shows LVH with "strain pattern," but doesn't tell you what LVH is, how to detect it, and what it means. Nor does it do so with the strain pattern. There are no quiz questions beyond simply showing you 12 leads. Very frustrating! This app is overpriced for what it is. It should be .99. ### 3/5 — Good start *2014-07-16* I was pretty underwhelmed with the design and usability. The content is good, the whole app just needs a facelift. ### 1/5 — Not great. *2014-03-03* Poor quality ECGs and no rhythm strips. ### 3/5 — Worth it *2014-01-02* I love this app it's teaching me 12 leads I didn't know. I wish it had multiple choice though. Other than that love it. ### 5/5 — Awesome resource *2012-09-24* Well designed, good quality ecgs you can zoom on, good variety of cases and clear explanations. Highly recommended. ### 5/5 — Great EKG review *2012-05-22* Great EKG review. ### 5/5 — Great app! *2012-05-08* This is a great app. I have recommended it to my paramedic students. Rob Theriault, Georgian College ### 4/5 — Good *2012-04-22* As a paramedic I love having the ability to test my diagnostic ability for 12 leads. This is a good program to see a lot of interesting ECGs. Its limits are that it is not a "great" teaching tool. It does go a little into the diagnostic criteria for each slide but you need to already have a pretty solid background in those areas for it to mean anything. I unfortunately had a pretty poor classroom education for 12 leads and have had to take it upon myself to learn as much as I could. Overall a good program. ### 5/5 — Awesome app *2011-11-20* As a new paramedic, I really need a handy tool to help me stay sharp on 12-lead analysis and this app delivers. Its sleek, simple design eliminates all the noise and lets you concentrate on making the crucial decision: Do I activate the cath lab? I hope the designers continue to update and add more 12-leads for conditions beyond the AMI. There are a handful of them here (Brugada, WPW, etc.), but in this case more is better. ## Frequently asked questions about 12 Lead ECG Challenge ### What is the cost of 12 Lead ECG Challenge? 12 Lead ECG Challenge is a paid application. It is available for a one-time purchase price of $5.99. ### Does 12 Lead ECG Challenge have ads? No, 12 Lead ECG Challenge is ad-free. Users can focus on learning without interruptions from advertisements. ### What devices support 12 Lead ECG Challenge? 12 Lead ECG Challenge is supported on iPhone and iPad devices, offering a flexible learning experience across Apple platforms. ### How often is 12 Lead ECG Challenge updated? The app was last updated on March 22, 2026, indicating a commitment to maintaining and potentially improving the application over time. ### What is the age rating for 12 Lead ECG Challenge? 12 Lead ECG Challenge has an age rating of 17+, suggesting it contains content suitable for mature audiences due to its medical subject matter. ### How does 12 Lead ECG Challenge help users practice? Users can customize their practice by reviewing 5, 10, or 20 cases at a time and can choose to exclude mastered ECGs for efficient study and skill refinement. ### What kind of ECG cases are included in 12 Lead ECG Challenge? The app features 180 real patient cases with clinically obtained 12-leads, covering a wide range of pathologies including acute STEMI, STEMI mimics, and electrolyte imbalances. ### Who developed 12 Lead ECG Challenge? 12 Lead ECG Challenge was created by Tom Bouthillet, a renowned ECG expert and blogger, and is developed by Limmer Creative Ventures LLC. ## Version history (last 5 releases) ### 4.2.0 — 2026-03-22 Bug Fixes ### 4.0.5 — 2025-05-12 Bug Fixes for Mastered Questions and Grey Screen ### 4.0 — 2025-03-17 Updated framework Bug fixes ### 2.1 — 2021-04-06 Minor bug fixes Server compatibility updates ### 2.0.11 — 2020-04-09 Pinch and Zoom bug fix ## Apps similar to 12 Lead ECG Challenge | App | Rating | Price | Category | | --- | --- | --- | --- | | [ECG and ACLS Tutor](https://appshunter.io/ios/app/ecg-and-acls-tutor/id6502144488) | 4.3 (6) | $0.99 | Medical | | [Pedi STAT EMS](https://appshunter.io/ios/app/pedi-stat-ems/id1595805495) | 5.0 (3) | $2.99 | Medical | | [ECG Interpretation MIE](https://appshunter.io/ios/app/ecg-interpretation-mie/id1586098216) | 3.7 (3) | Free | Medical | | [EMS Notes: EMT & Paramedic](https://appshunter.io/ios/app/ems-notes-emt-and-paramedic/id1146393027) | 4.7 (47) | Free | Medical | | [arrhythmia](https://appshunter.io/ios/app/arrhythmia/id996560473) | 4.2 (111) | Free | Medical | | [Northern Colorado Protocols](https://appshunter.io/ios/app/northern-colorado-protocols/id6449225036) | — | Free | Medical | ## More apps by Limmer Creative - [EMT Review Plus](https://appshunter.io/ios/app/emt-review-plus/id404658834) - [Paramedic Review Plus](https://appshunter.io/ios/app/paramedic-review-plus/id420015381) - [ACLS Review](https://appshunter.io/ios/app/acls-review/id441526222) - [PALS Review](https://appshunter.io/ios/app/pals-review/id444092601) - [Pathophysiology Review](https://appshunter.io/ios/app/pathophysiology-review/id500762305) All apps by Limmer Creative: https://appshunter.io/developer/387423724 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*