Published by Limmer Education, LLC on Oct 30, 2023

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Why should I report an Issue with 12-Lead ECG Challenge?

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About 12-Lead ECG Challenge

1. ECGs expand and move on your screen for easy viewing. • 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.

2. 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.

3. 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!

4. 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. • Phone or tablet- no problem!

5. NOTE: This app contains 150 high-quality 12-lead ECG images and detailed graphic explanations.

6. Each case begins with the patient complaint and the actual field or hospital 12-lead ECG.

7. Android requires 91mb of available space (45mb cache for download and 45mb for product install).

8. 12-Lead ECG Challenge is the ideal way to sharpen your 12-Lead ECG interpretation skills.

9. 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.

10. If you are responsible for cath lab activation, this program is ideal for honing skills and preventing false activation.

11. If you have the needed space and get an error you may need to clear your market cache in order to download.

12-Lead ECG Challenge Customer Insights

1. I would rather see what educational tools and info you have to share and then take a quiz that I can answer.I have found nothing that compares to this application in the realm of 12 lead interpretation, practice and explanation on Google play.

2. 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.

3. I presume if you already understand EKG's it might be good, but I'm not sure because I don't understand them yetDoesn't workTelling me 2,3 and avf is a anterior wall mi seriously who came up with this'till could not exit the app with back button on my Note 8.

4. Would like to see frequent updates with new EKGs as a dedicated student will quickly go through 125 cases and begin to recognize individual onesGreat app when it worked, crashes on my Droid Maxx 2 when.

5. I launch, have tried resetting my phone with no luckGreat app for learning real ECG recognition with helpful explanations.

6. Many thanksI had sent an email to the developer explaining that once the ecg is magnified, you can not go back to the question.

7. 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.

8. Save yourself the time searching and just buy this application.Great app and learning tool.

9. Very bad app or lousy drawing because it's designed as flash cards and the interface on a phone is bad.

10. Developer has done nothing to resolve issueAnnoyed that I just spent $6 on an app that does not teach you anything.

11. Useless app if you cant view the ecg up close before viewing the answer.

Steps to Troubleshoot & Fix 12-Lead ECG Challenge Issues

1. Fix 12-Lead ECG Challenge Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart 12-Lead ECG Challenge: Restarting the app will resolve most errors.
  2. Update the 12-Lead ECG Challenge App. Here is how:
    1. On Android goto PlayStore » Search for "12-Lead ECG Challenge" » Open 12-Lead ECG Challenge » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for 12-Lead ECG Challenge » click "UPDATE".
  3. Clear 12-Lead ECG Challenge app cache: Clearing cached data will force your app to retrieve the latest data directly from 12-Lead ECG Challenge servers.
    1. On Android, goto Settings » Apps » Select "12-Lead ECG Challenge" » click Storage » click "Clear Cache".
  4. Check 12-Lead ECG Challenge app permissions. If any of these permissions required to use your device's features are disenabled, 12-Lead ECG Challenge might not work.
  5. Uninstall and reinstall 12-Lead ECG Challenge. If nothing else has worked, completely uninstall 12-Lead ECG Challenge then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing 12-Lead ECG Challenge not working


2. Fix 12-Lead ECG Challenge Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make 12-Lead ECG Challenge be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to 12-Lead ECG Challenge not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, 12-Lead ECG Challenge may not be able to connect to the Internet when running in the background.

Reported Issues