# Instant ECG - Mastery of EKG — Electrocardiogram Rhythm Guide

> ECG/EKG rhythm and interpretation guide with learning modules and quizzes. (iPhone/iPad app by iAnesthesia LLC.)

- Source: https://appshunter.io/ios/app/instant-ecg-mastery-of-ekg/id301270080 (this page in markdown: same URL + `.md`)
- Developer: [iAnesthesia LLC](https://appshunter.io/developer/293134324)
- Category: Medical, Education
- Price: $5.99 with in-app purchases
- Rating: 4.00/5 from 518 App Store ratings · 168 written reviews indexed
- Age rating: 17+
- Requires: iOS 11.0 · 214 MB
- Languages: American English
- Released: 2009-01-06
- Data updated: 2026-09-02
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/instant-ecg-mastery-of-ekg/id301270080/reviews.md

## What is Instant ECG?

Instant ECG was designed as an ECG / EKG / Electrocardiogram guide for physicians, nurses, paramedics and other health care professionals. It is an excellent learning tool as well as a quick reference.

ECGs:
- Normal Sinus Rhythm (NSR) 
- Sinus Tachycardia 
- Sinus Bradycardia 
- Sinus Pause 
- Atrial Flutter 
- Atrial Fibrillation 
- Wandering Atrial Pacemaker
- Premature Atrial Contraction
- Supraventricular Tachycardia (SVT) 
- 1st Degree AV Block 
- 2nd Degree Wenckebach 
- 2nd Degree Mobitz II 
- 3rd Degree AV Block 
- Wolff-Parkinson White (WPW) 
- Junction Rhythm 
- Right Bundle Branch Block 
- Left Bundle Branch Block 
- Premature Ventricular Contraction (PVC) 
- Ventricular Escape 
- Ventricular Tachycardia 
- Torsades-de-Pointes 
- Ventricular Flutter 
- Ventricular Fibrillation 
- Idioventricular 
- Asystole
- SVT Cardioversion to NSR
- Torsades Cardioversion to A. Fib
- V. Tach Cardioversion to ST Elevation
- V. Fib Cardioversion to Asystole
- V. Tach Cardioversion to Junctional
- Right Ventricular Strain 
- Left Ventricular Strain 
- ST Depression Sinus Rhythm
- ST Elevation Sinus Rhythm
- Anteroseptal Wall MI 
- Anterolateral Wall MI 
- Lateral Wall MI 
- Inferior Wall MI 
- Apical Wall MI 
- Posterior Wall MI

Exams:
- ECG Basics
- True or False
- Multiple Choice
- Identify the Rhythm Strip
- Identify the 12-Lead Basic
- Clinical Aspects of AV Blocks
- Clinical Aspects of Bundle Branch Blocks
- Clinical Aspects of MI
- ACLS Bundle Exam 

Instant ECG was developed by iAnesthesia LLC and authored by T. Michael Truxillo M.D. CPPS and William S. Trask IV D.O. 

Instant ECG - REVIEWS
- "Instant ECG is the best ECG guide available for the iPhone" 
- "The definitive FIVE STAR EKG App."
- "Excellent App for student, resident or attending. I highly recommend it."
- "Helps to keep the rhythms fresh in my mind. Good for a 5-min review. Great quiz functionality."

## Key features

- Extensive ECG rhythm library
- Detailed interpretation of blocks and MIs
- Learning modules on ECG basics
- Interactive quizzes (True/False, MCQs)
- Rhythm strip identification
- 12-lead ECG identification

## Pricing and in-app purchases

Base price: $5.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Ad Removal | $1.99 | one-time |
| Exam Bundle | $0.99 | one-time |
| ACLS Movie Bundle | $4.99 | one-time |


## Chart rankings

- #55 in Top Paid · Medical (US App Store)

## What do users think of Instant ECG?

Overall sentiment: positive

**Pros**

- 🚀 Helpful for learning and reviewing ECG/EKG
- 👍 Concise and easy to use
- 👍 Great for practice and testing
- 👍 Useful for students and professionals
- 👍 Excellent teaching tool

**Cons**

- 🔒 Some features locked behind paywall
- 🐛 Crashes and bugs reported
- 🔒 Limited free content
- 🔋 Drains battery

**Commonly reported bugs**

- Rhythm strip videos not working
- Exams getting stuck on certain questions
- Compatibility issues with newer iOS versions

**Most requested features**

- More rhythm options and difficulty levels
- Add treatments and clinical implications for rhythms
- Landscape mode support
- Ability to save and share ECG readings
- Integrate with Apple Watch for live ECG monitoring

## Recent user reviews (10 of 168)

All indexed reviews: https://appshunter.io/ios/app/instant-ecg-mastery-of-ekg/id301270080/reviews.md

### 5/5 — Paramedic

*2026-04-15, version 3.5*

Excellent

### 5/5 — Very helpful

*2026-02-02, version 3.5*

It's the best ecg app I've ever used so far

### 4/5 — Like

*2026-01-29, version 3.5*

Excellent app for advanced and beginner EKG readers

### 5/5 — Best app for learning ECG

*2025-11-30, version 3.5*

Best app I’ve found for learning and testing myself for ECG and medic.

### 4/5 — Very helpful

*2025-10-16, version 3.5*

I try to brush up on ECGs as much as possible and this definitely helps me whether at the house or in between calls.

### 5/5 — Great app!

*2025-08-17, version 3.5*

A really nice tool for review, brushing up on rhythms, and learning. I love it!

### 4/5 — Great learning support

*2025-07-08, version 3.5*

Helps me review and prepare for ACLS.

### 5/5 — Reviewer

*2025-03-06, version 3.5*

Good educational app.

### 5/5 — Excellent reminder !

*2025-01-23*

Thanks for this excellent reminder

### 5/5 — Very Helpful

*2024-10-28, version 3.5*

I'm studying for a test. This made me realize I don't know anything! It's worth the price. I love the exams and the explanations to help me study.

## Frequently asked questions about Instant ECG

### What does Instant ECG do?

Instant ECG functions as a comprehensive guide and quick reference for electrocardiograms (ECGs/EKGs). It provides detailed information on a vast array of ECG rhythms, blocks, and myocardial infarctions, along with educational modules and quizzes to enhance understanding.

### What are the key features of Instant ECG?

Key features include an extensive library of ECG rhythms, detailed explanations of various blocks and myocardial infarctions, learning modules covering ECG basics, and interactive quizzes such as True/False, Multiple Choice, and rhythm strip identification exercises.

### How much does Instant ECG cost?

The application is available for free, but it offers in-app purchases for additional content or features. Specific pricing for these in-app purchases can be found within the app itself.

### Who is Instant ECG designed for?

This app is specifically designed for healthcare professionals, including physicians, nurses, and paramedics, who need a reliable tool for learning and quickly referencing ECG interpretations in their practice.

### What types of ECG rhythms are covered?

The app covers a wide spectrum of ECG rhythms, including Normal Sinus Rhythm (NSR), various tachycardias and bradycardias, atrial and ventricular arrhythmias like Atrial Fibrillation and Ventricular Tachycardia, as well as blocks such as AV Blocks and Bundle Branch Blocks.

## Version history (last 5 releases)

### 3.5 — 2019-08-27

In this update you will find bug fixes for videos that were not playing correctly and text that was not displaying correctly.

If you have any questions, suggestions or just want to chat,  email us at support@ianesthesia.org.

### 3.4 — 2018-02-06

A new year and a new update, the following should make using the app more helpful.

If you would like to see a feature added to Instant ECG, please let Dr. Truxillo and Dr. Trask know by emailing InstantECG@iAnesthesia.org

### 3.3 — 2017-12-12

New Apple Watch App 

- Dr. Truxillo and Dr. Trask want to continue adding value to Instant ECG, if there is anything you'd like to see added to Instant ECG please let us know support@ianesthesia.org

### 3.2 — 2017-04-07

Minor Updates for iPad Instant ECG

### 3.1 — 2017-03-29

iPad version of Instant ECG.

## Apps similar to Instant ECG

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [ECG EKG Interpretation Mastery](https://appshunter.io/ios/app/ecg-ekg-interpretation-mastery/id1143682180) | 4.5 (712) | Free | Medical |
| [ECG Test for Doctors](https://appshunter.io/ios/app/ecg-test-for-doctors/id757666618) | 4.7 (394) | Free | Medical |
| [ECG Pro \| Road to Mastery](https://appshunter.io/ios/app/ecg-pro-road-to-mastery/id798663024) | 4.5 (3,592) | Free | Medical |
| [ECG Books Pro](https://appshunter.io/ios/app/ecg-books-pro/id769420045) | 4.8 (16) | $9.99 | Medical |
| [ECG Pro for Doctors](https://appshunter.io/ios/app/ecg-pro-for-doctors/id719883477) | 4.6 (82) | $9.99 | Medical |
| [ECG Books](https://appshunter.io/ios/app/ecg-books/id739003604) | 4.7 (156) | Free | Medical |

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All apps by iAnesthesia LLC: https://appshunter.io/developer/293134324

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*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 2026-09-02.*