Comparison

ECG Notes vs InVivo

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ECG Notes

This pocket guide offers a quick reference for ECG interpretation and management, covering basics, 12-lead ECGs, ACLS, CPR, and emergency medications. It includes over 100 ECG strips and practice questions, with content updated to the latest guidelines. No internet connection is needed after initial download.

Highlights
  • 125 ECG rhythm strips
  • Comprehensive coverage: basics, ECG, ACLS, PALS, meds, CPR
  • CPR algorithms in tabular format
  • Test Yourself ECG strips with real-life arrhythmias
  • Clinical Tips and PALS coverage
  • SmartSearch technology for quick look-up
  • Offline content access
Features
Read full description

"Try before you buy" - Download the FREE App, which includes sample content. In-App purchase required to unlock all content. A Davis’s Notes title! The pocket guide that covers it all—basics, 12-lead, ACLS, meds, and CPR for adults and children! A quick look-up reference for ECG interpretation and management! This indispensable pocket guide presents the basics (anatomy and physiology of the cardiovascular system, electrical conduction system of the heart, basic ECG concepts and components,) ACLS and CPR algorithms, emergency medications, and comprehensive information on monitoring leads and interpretation of over 100 ECG strips, including 12-lead and pacemaker rhythms. KEY FEATURES * Compact rhythm analysis guide with 125 ECG rhythm strips * Complete coverage—basics, ECG (including 3- and 12-lead) ACLS, PALS, meds, and CPR * CPR algorithms in tabular format * Test Yourself ECG strips feature over 30 real-life arrhythmias * Clinical Tips throughout * PALS tab (Pediatric Advanced Life Support) * Peds coverage throughout… * Meds—Doses where applicable * Skills—Defibrillation, automated defibrillation (AED), and cardioversion * Basics—Normal vital signs values * No internet connection is required to access the content after the initial download. Find information quickly using powerful SmartSearch technology. Search part of term for those hard to spell medical terms. NEW TO THIS EDITION * Updated & Expanded! Incorporating advances in science and clinical practice, including the American Heart Association’s 2020 CPR, ACLS, and PALS guidelines * Expanded! “Clinical Tips” and coverage of rhythm analysis * New! Summary table, “Identifying Features of Arrhythmias” * New sections! Six Easy Steps in Analyzing ECG Strips and ECG Monitoring * Expanded! The 12-Lead tab with more in-depth information about analyzing a 12-lead ECG See what practitioners and students are saying about the previous edition… * Worth every penny!! “Bought this to keep in my lab coat to help me interpret ECGs. It is absolutely perfect. Has several different rhythms and 50 practice questions. Wish I bought it sooner.”—Online Reviewer * If you are trying to learn EKG, this is a must have!! “Really convenient tool to learn from. Easy to navigate.”—Emily, L., Online Reviewer * Great for nursing students and RNs. “As a nurse educator (and earlier a staff RN) I made these required reading for my students, plus it's useful well beyond graduation.”—Barbara R., Online Reviewer * Perfect Pocket reference. “For those of us that don't always remember every detail of EKGs, and need some help on the fly, this is perfect. I can carry it with me for reference whenever I need. I have already recommended it to many of my colleagues.”—Online Reviewer Content licensed from printed ISBN 10: 1719641943 Content licensed from printed ISBN 13: 9781719641944 SUBSCRIPTION : Please purchase a yearly auto-renewing subscription to receive content access and available updates. Yearly auto-renewing payments- $34.99 Payment will be charged to your iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Subscription may be managed by the user and auto-renewal can be disabled at any time by going to your device “Settings” and tapping “iTunes & App Store”. Any unused portion of a free trial period will be forfeited when you purchase a subscription, where applicable." If you have any questions or comments, email us any time: customersupport@skyscape.com or call 508-299-3000 Privacy Policy - https://www.skyscape.com/terms-of-service/privacypolicy.aspx Terms and Conditions - https://www.skyscape.com/terms-of-service/licenseagreement.aspx Author(s): Shirley A. Jones MSEd, MHA, MSN, EMT-P, RN Publisher: F.A. Davis Company

About

InVivo

Features
Read full description

Introducing the ECG (EKG) Learning Platform - the ultimate guide to mastering electrocardiograms. This innovative app is designed for students and healthcare professionals who are seeking a modern and effective way to learn about ECGs. Unlike traditional textbooks, the ECG app offers a comprehensive platform that breaks down the complexities of ECGs into easy-to-follow chapters. Each chapter contains tutorials and a set of model questions that allow you to test your knowledge and track your progress. StudyCloud expands the app's capabilities by allowing users to share study materials, giving you the flexibility to use educational resources both online and offline. You can now easily download, print, and share materials with friends or add your own notes to them. Get started with the ECG Learning Platform today and take your ECG interpretation skills to the next level. Martin Trnka, M.D., a Czech internist, is the main author of the app, and he works tirelessly with his colleagues to continuously update and expand the educational content with the latest medical knowledge. You can find a list of the references used inside the app. The subject of the in-app purchase is access to an e-book, which includes bonus practice questions and educational features of the app to facilitate your studies. The final price for the e-book includes 0% VAT (exempt supply according to §71i of the VAT Act). Stay up to date: Web – https://invivoecg.info E-mail – info@mercurysynergy.com By downloading the app, you agree not to infringe on copyright. Notice: The content of this platform falls under § 5b of Act No. 40/1995 Coll. of the Czech Republic and is not intended for the general public. By registering and using the app: I confirm that I am a professional as defined in §2a of Act No. 40/1995 Coll. of the Czech Republic, on the regulation of advertising, as amended, and that I have familiarized myself with the legal definition of a professional, i.e., a person authorized to prescribe or dispense medicinal products, medical devices, or in vitro diagnostic medical devices, and with the risks and consequences faced by anyone other than a professional who accesses a platform intended for professionals. Terms of Use by Mercury Synergy: https://mercurysynergy.com/terms-and-conditions/ Terms of use by the App Store: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ECG Notes4 screens
InVivo4 screens

Verdict

The call

The clearest difference is ads: InVivo at none against ECG Notes's shown. InVivo also leads on update cadence (fortnightly vs every 3 months). ECG Notes's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ECG Notes sells 1 one-off in-app purchase and InVivo sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ECG Notes ships an update every 3 months, InVivo fortnightly. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.

Scorecard3 real differences · 7 level
ECG Notes versus InVivo: the parameters behind the verdict, then further details
ParameterECG NotesInVivo
PriceFreeFree
Rating4.7 (12 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings12 — better—
Update frequencyEvery 3 monthsFortnightly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size46 MB109 MB
Age rating17+17+
DeveloperSkyscape Medpresso IncMercury Synergy s.r.o.

In-app purchases

1 purchases

ECG Notes

One-time1
  • ECG Notes-Ed.4$34.99
3 purchases

InVivo

Subscriptions3
  • 1-Month Auto-Renew Premium$6.991 Month
  • 3-Month Auto-Renew Premium$9.993 Months
  • Annual Auto-Renew Premium$19.991 Year

Questions

Is ECG Notes free?
ECG Notes is free to download, with in-app purchases available.
Is InVivo free?
InVivo is free to download, with in-app purchases available.
Do ECG Notes or InVivo have ads?
ECG Notes shows ads; InVivo does not.
Which is updated more often, ECG Notes or InVivo?
ECG Notes ships an update every 3 months, and InVivo fortnightly. Most recently, ECG Notes was updated on October 21, 2026 and InVivo on October 27, 2026.

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