App Customer
Service

12 Lead ECG Challenge Customer Service

About 12 Lead ECG Challenge (Limmer Creative)

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!
CategoryMedical
Release DateSeptember 6, 2011
Latest Version4.2.0
Price$5.99
Age Rating17+
CompatibilityRequires iOS 17.6
Last UpdatedMarch 22, 2026
Size49 MB
Supported Languages (1)
English

What's New in 12 Lead ECG Challenge (v4.2.0)

Bug Fixes

12 Lead ECG Challenge Contact Information

To reach 12 Lead ECG Challenge customer service and technical support, use the official channels below. For the fastest reply, choose the developer's official website.

Company NameLimmer Creative
Company Websitelimmereducation.com
Company Email[email protected]
Customer Servicelimmereducation.com/app
Social MediaFacebook / Twitter

12 Lead ECG Challenge Subscription, App Deletion & iOS Support

How do I cancel the 12 Lead ECG Challenge subscription?

Open Settings on your iPhone or iPad, tap your Apple ID (your name) at the top, go to Subscriptions, select 12 Lead ECG Challenge from the list and tap Cancel Subscription. Cancellation takes effect at the end of the current billing period; you can keep using the app until then. See Apple's official subscription management page for details.

How do I delete the 12 Lead ECG Challenge app?

Touch and hold the 12 Lead ECG Challenge icon on the Home Screen, choose Remove App and then Delete App. Important: if you have an active subscription, deleting the app does not cancel it automatically - you must first cancel your subscription using the steps above.

12 Lead ECG Challenge purchases, refunds and billing issues

Report billing or refund requests for 12 Lead ECG Challenge through Apple's Report a Problem (reportaproblem.apple.com). For the app's own technical support and contact, use the developer's official website or the 12 Lead ECG Challenge App Store page.

Distribution of 12 Lead ECG Challenge Reviews

Of the last 8 reviews shown, 75% are positive (4–5★) and 25% negative (1–3★). App Store overall rating: 3.3 / 5

5★ 4
4★ 2
3★ 1
2★ 1
1★ 0
Most mentioned:leadsstudytooltrybetterparamedicteachingotherdoesnlvh

12 Lead ECG Challenge Positive Reviews and Ratings

Ad

Wise sends money abroad at the real mid-market exchange rate with low, transparent fees - no hidden markups. You can hold 40+ currencies in one account and spend abroad with the Wise card without extra conversion fees. Try Wise for free →

Wise2026 Trends
A bug and a little more

First I want to say it is a good app. Great ECG's that will give you a great study tool. The only thing that slows me down right now with it is when I zoom in to take a closer look at the ECG's the images are extremely touchy. What I mean is when I try and move the ECG around with my finger, after about 10 seconds of it being zoomed in, the ECG's will jump from one end of the ECG to the other when I try and only move it from lead 1-3 over to maybe V1-V3. And sometimes it moves it completely off the screen and I have to try and find it or give up and zoom out. But the ECG images themselves are great quality and a great challenge. Second the app could be even better if there was maybe a study section that showed examples and explanations of the STEMI mimics. I'm sure the app is large enough but a small section that gave a better explanation of what benign early re-polarization looks like would in my mind makes this app the ultimate 12 lead study app. Great work!!!

Rock N IceVersion: 1.0
Good

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.

SkopdxVersion: 1.1
Awesome app

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.

SD PopVersion: 1.1
Like having a mini text book on your smart phone!

This is a great app for both the novice and experienced clinician and I will recommend for both nurses and paramedics alike.

KelRN24Version: 1.0
Great EKG review

Great EKG review.

DrkazuVersion: 1.1
Ad

Travelpayouts is an affiliate network that turns travel content into income. You promote flights, hotels and car rentals from one dashboard and earn commission on every booking. Join Travelpayouts →

Travelpayouts2026 Trends
Great app!

This is a great app. I have recommended it to my paramedic students. Rob Theriault, Georgian College

Prof. Rob TVersion: 1.1

12 Lead ECG Challenge Negative Reviews and Ratings

Worth it

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.

InfirnumVersion: 1.2
Just ok

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.

JLohrVersion: 1.3

12 Lead ECG Challenge Screenshots

12 Lead ECG Challenge iPhone Screenshot 1
12 Lead ECG Challenge iPhone Screenshot 2
12 Lead ECG Challenge iPhone Screenshot 3
12 Lead ECG Challenge iPhone Screenshot 4
12 Lead ECG Challenge iPhone Screenshot 5
12 Lead ECG Challenge iPhone Screenshot 6
12 Lead ECG Challenge iPhone Screenshot 7