ECG Notes vs QTc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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"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
QTc
This medical app calculates QTc using nine different formulas. It allows users to input heart rate or RR interval and QT interval length for quick results. An Apple Watch app is also included for convenient access.
- Nine QTc calculation formulas
- Input heart rate or RR interval
- Input QT interval length
- Apple Watch app integration
- No personal data collection
- Offline functionality
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Nine formulas! Apple Watch App! This app enables doctors to calculate QTc quickly. You can enter either the heart rate or the length of the RR interval, and the length of the QT interval. There will be results for QTc for the following formulas: Bazett's, Fridericia's, Framingham's, Hodges's, Goto's, Mayeda's, Kawataki's, Rautaharju's a and b. Also, RR interval or heart rate and estimates of QT depending on heart rate are determined. An Apple Watch app is also included. PRIVACY: This app does not collect any personal data. No connections to a server will be made. Please note: This app provides only information, is not medical or treatment advice and may not be treated as such by the user. As such, this App may not be relied upon for the purposes of medical diagnosis or as a recommendation for medical care or treatment. The information on this App is not a substitute for professional medical advice, diagnosis or treatment. All content, including text, graphics, images and information, contained on or available through this App is for general information purposes only. Professional Medical Advice and Assistance You are strongly encouraged to confirm any information obtained from or through this App with your physician or another professional healthcare provider and to review all information regarding any medical condition or treatment with your physician or other a professional healthcare provider. No Reliance YOU MUST NEVER RELY ON ANY INFORMATION OBTAINED USING THIS APP FOR ANY DIAGNOSIS OR RECOMMENDATION FOR MEDICAL TREATMENT. YOU MUST NEVER RELY ON THE INFORMATION RECEIVED FROM THIS APP AS ALTERNATIVE TO MEDICAL ADVICE FROM YOUR PHYSICIAN OR OTHER PROFESSIONAL HEALTHCARE PROVIDER.\n\nYOU MUST NEVER DISREGARD PROFESSIONAL MEDICAL ADVICE OR DELAY SEEKING MEDICAL TREATMENT AS RESULT OF ANY INFORMATION YOU HAVE SEEN ON OR ACCESSED THROUGH THIS APP. IF YOU HAVE ANY SPECIFIC QUESTIONS ABOUT ANY MEDICAL MATTER YOU SHOULD CONSULT YOUR PHYSICIAN OR OTHER PROFESSIONAL HEALTHCARE PROVIDER. IF YOU THINK YOU MAY BE SUFFERING FROM ANY MEDICAL CONDITION YOU SHOULD SEEK IMMEDIATE MEDICAL ATTENTION. No Warranty The information provided by this App is provided “as is” without any representations or warranties, express or implied. iProvèn makes no representations or warranties in relation to the medical or other information in this App.
Screenshots
Verdict
The clearest difference is in-app purchases: QTc at none against ECG Notes's 1. QTc also leads on ads (none vs shown) and ratings volume (51 vs 12). ECG Notes's advantage is iOS requirement (13.0 vs 18.0). On price, rating, review sentiment and update cadence 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
Both are free to download. ECG Notes sells 1 one-off in-app purchase. QTc asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.7 for ECG Notes against 4.7 for QTc. Both are backed by a comparable volume of ratings — 12 and 51 respectively. Written reviews split almost evenly too, at 50% and 50% positive.
ECG Notes ships an update every 3 months, QTc every 4 months. The most recent releases landed on October 21, 2026 and October 7, 2026 respectively.
| Parameter | ECG Notes | QTc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (12 ratings) | 4.7 (51 ratings) — better |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| Number of ratings | 12 | 51 — better |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 46 MB | 1 MB |
| Age rating | 17+ | 17+ |
| Developer | Skyscape Medpresso Inc | Marian Stiehler |
Customer experience
ECG Notes
QTc
In-app purchases
ECG Notes
- ECG Notes-Ed.4$34.99
QTc
No in-app purchases









