12-Lead ECG Challenge
12-Lead ECG Challenge is the ideal way to sharpen your interpretation skills.
App info
App description
Android App Analysis and Review: 12-Lead ECG Challenge, Developed by Limmer Education, LLC. Listed in Medical Category. Current Version Is 4.1.9, Updated On 13/11/2025 . According to users reviews on Google Play: 12-Lead ECG Challenge. Achieved Over 9 thousand Installs. 12-Lead ECG Challenge Currently Has 66 Reviews, Average Rating 3.1 Stars
12-Lead ECG Challenge is the ideal way to sharpen your 12-Lead ECG interpretation skills. Created by Tom Bouthillet electrocardiography expert and popular ECG blogger, this app contains 150 clinically obtained 12-lead ECGs to provide you the practice, insights and confidence you need!The 12-Lead ECG Challenge app presents a wide variety of cardiac pathologies including a special emphasis on acute STEMI and the STEMI mimics, electrolyte imbalances and others. If you are responsible for cath lab activation, this program is ideal for honing skills and preventing false activation.
Each case begins with the patient complaint and the actual field or hospital 12-lead ECG. You will be able to examine each 12-lead and come to a diagnostic conclusion. ECGs are expandable and movable for easy viewing on phones, computers or tablets. After choosing “answer” you will see a detailed analysis of the strip – many times with highlights graphically superimposed over the strip itself to show areas of interest.
The 12-Lead ECG challenge allows you to choose 5, 10 or 20 strips at a time as well as a feature allowing you to exclude strips you have already mastered from the program.
App Highlights:
• Phone or tablet- no problem! ECGs expand and move on your screen for easy viewing.
• 150 high-quality 12-lead ECGs.
• Strips are presented with the actual patient complaint/scenario.
• Detailed rationale answers including actual diagnosis and graphical reference demonstrating key points on the ECG itself.
• Highlights acute STEMI, STEMI mimics, cath lab activation recommendations, electrolyte imbalances, and other cardiac and atypical presentations and anginal equivalents.
NOTE: This app contains 150 high-quality 12-lead ECG images and detailed graphic explanations. To provide this quality, the app is a large download. Android requires 91mb of available space (45mb cache for download and 45mb for product install). Some phones do not have this space available. If you have the needed space and get an error you may need to clear your market cache in order to download. Also due to size, downloading over a wireless network is preferable to the cellular network.
NOTE: Purchase of this app will not provide the user access to the lc-ready.com web site
What's New
Bug Fixes


Recent Comments
A Google user
ZERO STARS (0) IF YOU'RE A BEGINNER. DO NOT BUY IF YOU'RE LOOKING TO LEARN THE BEGINNINGS. Very bad app or lousy drawing because it's designed as flash cards and the interface on a phone is bad. I presume if you already understand EKG's it might be good, but I'm not sure because I don't understand them yet
Valerie Jean
Doesn't work
Quinn Mulcahy
Telling me 2,3 and avf is a anterior wall mi seriously who came up with this
A Google user
'till could not exit the app with back button on my Note 8. Need a resolution. Many thanks
A Google user
I had sent an email to the developer explaining that once the ecg is magnified, you can not go back to the question. They had suggested using the 'back' button on my phone (galaxy s4) after magnifying to reexamine the question, however when you hit back, it takes you to a new question. Useless app if you cant view the ecg up close before viewing the answer. Developer has done nothing to resolve issue
A Google user
Annoyed that I just spent $6 on an app that does not teach you anything. Lame! You have to go through each card / question, look at it, make your determination in your head and then you get to see what yhe answer is. Then you may be able to learn something but it's not worth the time. I would rather see what educational tools and info you have to share and then take a quiz that I can answer.
A Google user
I have found nothing that compares to this application in the realm of 12 lead interpretation, practice and explanation on Google play. The ui is easy and simple. Save yourself the time searching and just buy this application.
A Google user
Great app for learning real ECG recognition with helpful explanations. Regular updates would be better though.