ECG Guide vs Lanthier
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ECG Guide
This comprehensive reference app provides over 200 high-quality ECG examples and in-depth explanations for medical professionals and students. It offers stepwise interpretation assistance, a large library of common and complex findings, and quiz questions to test knowledge.
- Over 200 high-resolution sample ECGs
- In-depth reference text on ECG interpretation
- Stepwise ECG Interpreter assistance
- Over 100 multiple-choice quiz questions
- Rapid Reference section for quick interpretation
- Clear descriptions of arrhythmias and findings
- Pediatric values included
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The most comprehensive ECG app in the iPhone App Store - over 200 examples of common and uncommon ECGs iPad version? bit.ly/ECGiPad or search iTunes "ECG Guide iPad" Praise for the ECG Guide: "The best ECG app currently available." -iMedicalApps.com "Core Medical App." - Georgetown Medical School. “This brand-new gem features concise explanations with ample high-quality ECG examples...” - American College of Emergency Physicians “...a 5 star application” - User review “...a must have application for doctors, residents and medical students.” - User review Succinct yet authoritative, this ECG reference is a critical companion for practicing physicians, medical trainees, nurses and paramedics. It is designed as a learning tool for those still training as well as a reliable reference for more experienced interpreters of ECGs. ***************************** Features: - Full reference text that includes in-depth information on topics such as: - Approach to ECG Interpretation - Analysis of rate, rhythm, axis, P wave, QRS complex, ST segment, T wave and QT interval - Ventricular hypertrophy and atrial enlargement - Assessment of ischemia - Approach to arrhythmia - Bradyarrythmias and tachyarrythmias, Heart block, and much more… (content based on national guidelines 2009 AHA/ACCF/HRS Recommendations for the standardization and interpretation of the electrocardiogram) - The largest ECG library available on the iPhone with over 200 high resolution sample ECGs with common and complex findings for easy reference - ECG Interpreter - Stepwise assistance with ECG interpretation. Helps create differential diagnosis based on simple to assess ECG features. - Over 100 multiple-choice quiz questions to test your knowledge - Rapid Reference section - one tap takes you to 11 summary pages used to confidently interpret ECGs - Clear descriptions of both common and complex arrhythmias and ECG findings - Review etiology and differential diagnosis of common and complex arrhythmias and ECG findings - Pediatric values included Compiled and written by Jason Andrade, MD, FRCPC.
Lanthier
Access up-to-date internal medicine information and guidelines quickly and efficiently. This app offers a fast search function, intuitive menus, and direct links to PubMed references. It's designed for physicians, residents, and medical students to use at the bedside.
- Concise bedside information
- Advanced search function
- Intuitive menus
- Direct links to PubMed
- Personal note-taking
- Cross-device synchronization
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“Lanthier” is an internal medicine app based on the seventh edition of the bestselling pocketbook. Completely re-imagined for iOS, this app will allow any physician, resident or medical student to access up-to-date medical information and guidelines quickly and efficiently. Free 7 days trial subscription! “Lanthier Practical Guide to Internal Medicine is a good choice for an app to replace your pocketbook. Beyond providing quality content with references, it has an excellent design that makes it more than just a digitized version of a book. Finding clinically relevant information about a condition is quick and easy.” iMedicalApp.com — FEATURES — • Concise: edited to be useful at the bedside. • Fast: advanced search function, intuitive menus. • Direct link to the references on PubMed and now through Read by QxMD (internet connection required). Build your paper collection using articles selected by Dr Lanthier himself. • MedCalX integration (sold separately): for quick access to the trusted medical calculator. • Take personal notes within the topics and synchronize them across your iOS devices. Perfect for studying for board exams! — TOPICS — Cardiology Dermatology (new) Endocrinology Gastroenterology General Internal Medicine Hematology Infectious Diseases Nephrology Neurology Oncology Pneumology Rheumatology — ABOUT THE LEAD AUTHORS — Dr Luc Lanthier practices General Internal Medicine at the Sherbrooke University Hospital Center and is a Professor of Medicine at the Faculty of Medicine and Health Sciences of the University of Sherbrooke. He is former chair of the French Examination Board for Internal Medicine Exam at the Royal College of Physicians and Surgeons of Canada. Dr Donald Echenberg practices General Internal Medicine at the Sherbrooke University Hospital Center and is an Associate Professor of Medicine at the Faculty of Medicine and Health Sciences of the University of Sherbrooke. He is past president of the Canadian Society of Internal Medicine and is currently Governor of the Quebec Chapter of the American College of Physicians. — DISCLAIMER — This publication (application) is to be used as a guide only. It is intended only for use by licensed medical practitioners and medical students. Every doctor (or prescriber) is responsible for their actions. Therapeutic options presented in this guide reflect current approaches and guidelines in the field of internal medicine. Content has been peer reviewed by leading experts in their respective fields. The authors of Lanthier - Practical Guide to Internal Medicine shall not be liable for any injury and/or damage to persons or property arising from the use of this application. This guide is not meant to replace clinical judgment. It is the responsibility of the licensed prescriber to verify the indications, contraindications and dosage of the medication (and actions) they prescribe. — ABOUT SUBSCRIPTION — Lanthier - Internal Medicine is offered as a subscription service, renewed automatically. Payment will be charged to iTunes Account at confirmation of purchase. The subscription will automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period. The iTunes Account will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the application «Settings» section and tapping «Manage Subscriptions» after purchase. For more information on Terms of Use visit https://lanthiermed.com/terms-of-use
Screenshots
Verdict
The clearest difference is price: Lanthier at Free against ECG Guide's $0.99. ECG Guide's advantage is in-app purchases (none vs 2) and review sentiment (76% vs 62%). On rating, ratings volume, update cadence and ads 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
Lanthier is free to download; ECG Guide costs $0.99 up front. Lanthier sells 2 in-app purchases, starting at $19.49 per year. ECG Guide asks for nothing beyond the download.
Lanthier holds the better App Store score, 3.8 against 3.6. Both are backed by a comparable volume of ratings — 8 and 5 respectively. Written reviews complicate that: 76% of ECG Guide's written reviews are positive against 62% of Lanthier's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 22, 2026 and September 10, 2026 respectively.
| Parameter | ECG Guide | Lanthier |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.6 (8 ratings) | 3.8 (5 ratings) — better |
| Positive reviews | 75.8% of reviews — better | 61.9% of reviews |
| Number of ratings | 8 — better | 5 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid — better | Subscription |
| Best chart rank | #169 — better | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 26 MB | 70 MB |
| Age rating | 17+ | 17+ |
| Developer | WebMD | Les Éditions Formed inc. |
Customer experience
ECG Guide
Lanthier
Bugs and requests
ECG Guide
Reported bugs
7 issues- App crashes at startup
- Incompatible with iOS 4 (fixed in later updates)
- Incompatible with iOS 11 (64-bit update needed)
- UI appears blown-up and blurry on iPhone 6+
- Cannot exit ECG view when rotated sideways
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- Crashes after OS 3.0 update
- Incorrect pricing display in some regions
Requested features
14 requests- iPad support and optimization
- Highlight or circle abnormalities on ECG images
- Search functionality for finding specific content
- Customizable quiz difficulty levels
- ACLS algorithms integration
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- Pediatric reference tables and criteria
- Arrows and annotations on ECG samples
- Corrected QT calculator
- Alternate lead placement information (Fontane, Brugada)
- Notes and favorites functionality
- Camera integration to analyze ECG photos
- Device synchronization between iPhone and iPad
- More heart block examples
- Smoother landscape/portrait transitions
Lanthier
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ECG Guide
No in-app purchases
Lanthier
- Lanthier - current users3 Months trial$19.491 Year
- Lanthier - new users7 Days trial$19.491 Year









