Comparison

EDF vs Barnhill's Derm. Challenge

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

Head to head
About

EDF

Features
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This guideline has been developed by and for doctors involved in the treatment of psoriasis. The recommendations for the different treatment options are rated according to their strength. The guideline offers advice on patient monitoring, contraindications and adverse events. Recommendations are also made for groups of patients who require special consideration when receiving psoriasis treatment, such as those with a history of malingnacy, HIV infection or impaired liver or kidney function. The guideline has originally been published in the Journal of the European Academy of Dermatology and Venereology (JEADV) by Nast A, et al. J Eur Acad Dermatol Venereol. 2015 Dec;29(12):2277-94. doi: 10.1111/jdv.13354

About

Barnhill's Derm. Challenge

Features
Read full description

The only fully-illustrated, full-color, question and answer review of dermatologic pathology Barnhill’s Dermatopathology Challenge: Self- Assessment & Review provides you with both a practical self-assessment tool and a comprehensive review, all in one compact volume. Covering pertinent clinical and histopathologic encountered in private and academic dermatopathology practice, it enables you to gain a comprehensive understanding of this critical subspecialty area. This unique book tests your depth of knowledge about cutaneous clinicopathologic correlation through a series of more than 400 illustrated clinical vignette-style questions encompassing over 700 diagnostic entities. Each vignette is accompanied by a detailed explanation discussing relevant clinical and histopathological differential diagnoses. Additionally, each entity covered offers a summary table for rapid review and concise β€œquick fact” tables that highlight important diagnostic findings. The high quality images present classic examples of conditions encountered in clinical practice and on board certification exams. Many were taken from the Textbook of Dermatopathology by Barnhill, widely acknowledged as the best resource for differential diagnosis in this field. Features: β€’ Material covered accounts for 25% of the dermatology board and recertification examinations – passing the dermatopathology portion of the exam is required to pass the overall exam β€’ All images are clearly labeled to help you learn and review diagnostic features This app is easy to navigate, allowing you to browse the contents or search the text. The search tool shows you choices of words that appear in the text as you type so it is quick and helps with spelling issues. It also remembers past search terms so you can go back to a question or answer very easily. You can also change the text size for easier reading. Bookmark questions, add notes, answer multiple choice questions, view your statistics, and create customized tests on your way to mastering the content! No internet connection needed to view the full app. It is all ready for super quick image and information retrieval. This app is optimized for whatever size device you are using, either phone or tablet. Check out www.usatinemedia.com to learn more and watch a video demo of this app. This interactive app is based on the full content of Barnhill's Dermatopathology Challenge: Self-Assessment & Review by McGraw-Hill Education. Editors: Garrett T. Desman, MD Assistant Professor of Pathology and Dermatology Icahn School of Medicine at Mount Sinai New York, New York Attending Physician, Dermatopathology Services Mount Sinai Hospital New York, New York Raymond L. Barnhill, MD, MSc Professor Department of Pathology Institut Curie Paris, France 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, LLC Richard P. Usatine, MD, Co-President, Professor of Family & Community Medicine, Professor of Dermatology and Cutaneous Surgery, University of Texas Health Science Center San Antonio Peter Erickson, Co-President, Lead Software Developer

Screenshots

EDF4 screens
Barnhill's Derm. Challenge4 screens

Verdict

The call

The clearest difference is price: EDF at Free against Barnhill's Derm. Challenge's $99.99. Barnhill's Derm. Challenge's advantage is update cadence (every 3 months vs every 7 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

EDF is free to download; Barnhill's Derm. Challenge costs $99.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EDF ships an update every 7 months, Barnhill's Derm. Challenge every 3 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard2 real differences Β· 4 level
EDF versus Barnhill's Derm. Challenge: the parameters behind the verdict, then further details
ParameterEDFBarnhill's Derm. Challenge
PriceFree β€” better$99.99
Update frequencyEvery 7 monthsEvery 3 months β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod β€” better
Requires iOS9.0 β€” better10.0
Further details β€” not scored
Size2 MB559 MB
Age rating17+17+
Developerswiss4ward Europe S.L.Usatine & Erickson Media LLC

In-app purchases

None

EDF

No in-app purchases

None

Barnhill's Derm. Challenge

No in-app purchases

Questions

Is EDF free?
EDF is free to download, with no in-app purchases.
Is Barnhill's Derm. Challenge free?
Barnhill's Derm. Challenge costs $99.99, with no in-app purchases.
Do EDF or Barnhill's Derm. Challenge have ads?
Neither EDF nor Barnhill's Derm. Challenge shows ads.
Which is updated more often, EDF or Barnhill's Derm. Challenge?
EDF ships an update every 7 months, and Barnhill's Derm. Challenge every 3 months. Most recently, EDF was updated on October 26, 2026 and Barnhill's Derm. Challenge on October 27, 2026.

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