Comparison

Lookingbill & Marks' Derm. 5E vs ECG

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

Head to head
About

Lookingbill & Marks' Derm. 5E

Features
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With Lookingbill and Marks' Principles of Dermatology, you can quickly confirm your diagnoses for even the most challenging dermatologic conditions! Written by Dr. James G. Marks, Jr. and Dr. Jeffrey J. Miller, this highly visual guide provides the foundational information you need to identify the full range of skin diseases - all in a consistent, quick-reference format ideal for use in clinical practice. Key features: • Distinguish differences among skin conditions using tables that summarize the most important characteristics of the major categories. • Consider atypical diagnoses by viewing additional photos of more uncommon presentations at the end of each chapter. • Make a differential diagnosis with help from numerous tables that rank skin diseases according to frequency of incidence and highlight clinical features. • Test your mastery of key material with self-assessment case reviews. This app is very intuitive and easy to navigate, allowing you to browse the contents or search for topics. The powerful search tool gives you word suggestions that appear in the text as you type, so it is lightning fast and helps with spelling those long medical terms. The search tool also keeps a recent history of past search terms so you can go back to a previous search result very easily. You have the ability to create notes and bookmarks separately for text, images and tables to enhance your learning. You can also change the text size for easier reading. After the app has been downloaded, no internet connection is needed to retrieve the content of the app. All of the text and images are available to you on your device anytime, anywhere, and lightning fast. This app is also automatically optimized for whatever size device you are currently using, either phone or tablet. Check out https://usatinemedia.com to learn more and watch a video demo of this app. This interactive app contains the full content of Lookingbill and Marks' Principles of Dermatology, 5th Edition by Elsevier. ISBN-13: 978-1455728756 ISBN-10: 9781455728756 Authors: James G. Marks Jr MD Professor of Dermatology Chair, Department of Dermatology Pennsylvania State University College of Medicine Penn State Hershey Medical Center Hershey, PA, USA Jeffrey J. Miller MD Professor of Dermatology Vice Chair, Department of Dermatology Pennsylvania State University College of Medicine Penn State Hershey Medical Center Hershey, PA, USA Disclaimer: This app is intended for the education of healthcare professionals and not as a diagnostic and treatment reference for the general population. Developed by Usatine Media Richard P. Usatine, MD, Co-President, Professor of Family & Community Medicine, Professor of Dermatology and Cutaneous Surgery, University of Texas Health San Antonio Peter Erickson, Co-President, Lead Software Developer

About

ECG

Features
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"ECG - Corrected QT Interval: Electrocardiogram Rhythm App” is designed to help health professional to assess the QT interval from an electrocardiogram (ECG) result. The QT interval in electrocardiogram (ECG) is representing ventricles depolarization and repolarization. Why should you choose "ECG - Corrected QT Interval: Electrocardiogram Rhythm App"? - Simple and very easy to use. - Accurate and precise calculation. - There are three formulas (Bazzet, Fredericia, and Framingham) to calculate corrected QT interval (QTc) - It is totally free. Download now! The QT interval is affected by heart rates, so we need to calculate the corrected QT interval (QTc). The corrected QT interval (QTc) will estimate the QT interval at a heart rate of 60 beats per minute. Prolonged corrected QT interval (QTc) is associated with ventricular arrhythmias, especially Torsades de Pointes. "ECG - Corrected QT Interval: Electrocardiogram Rhythm App" app is a practical medical calculator to calculate the corrected QT interval (QTc). In "ECG - Corrected QT Interval: Electrocardiogram Rhythm App", the user need to input the QT interval (in millisecond) and heart rate (in beats per minute) to calculate the corrected QT interval (QTc). "ECG - Corrected QT Interval: Electrocardiogram Rhythm App" have three available formulas, namely Bazzet, Fredericia, and Framingham. Disclaimer: all calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. Calculations in this “ECG - Corrected QT Interval: Electrocardiogram Rhythm App” app might be different with your local practice. Consult to expert doctor whenever necessary.

Screenshots

Lookingbill & Marks' Derm. 5E4 screens
ECG3 screens

Verdict

The call

The clearest difference is price: ECG at Free against Lookingbill & Marks' Derm. 5E's $64.99. ECG also leads on update cadence (fortnightly vs every 11 months). Lookingbill & Marks' Derm. 5E's advantage is ads (none vs shown) and iOS requirement (10.0 vs 12.0). On 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

ECG is free to download; Lookingbill & Marks' Derm. 5E costs $64.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Lookingbill & Marks' Derm. 5E ships an update every 11 months, ECG fortnightly. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

Scorecard4 real differences · 2 level
Lookingbill & Marks' Derm. 5E versus ECG: the parameters behind the verdict, then further details
ParameterLookingbill & Marks' Derm. 5EECG
Price$64.99Free — better
Update frequencyEvery 11 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better12.0
Further details — not scored
Size109 MB37 MB
Age rating17+12+
DeveloperUsatine & Erickson Media LLCPutu Angga Risky Raharja

In-app purchases

None

Lookingbill & Marks' Derm. 5E

No in-app purchases

None

ECG

No in-app purchases

Questions

Is Lookingbill & Marks' Derm. 5E free?
Lookingbill & Marks' Derm. 5E costs $64.99, with no in-app purchases.
Is ECG free?
ECG is free to download, with no in-app purchases.
Do Lookingbill & Marks' Derm. 5E or ECG have ads?
ECG shows ads; Lookingbill & Marks' Derm. 5E does not.
Which is updated more often, Lookingbill & Marks' Derm. 5E or ECG?
Lookingbill & Marks' Derm. 5E ships an update every 11 months, and ECG fortnightly. Most recently, Lookingbill & Marks' Derm. 5E was updated on November 1, 2026 and ECG on October 27, 2026.

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