Comparison

Symptom to Diagnosis 4/E vs Virtualis

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

Head to head
About

Symptom to Diagnosis 4/E

Features
Read full description

An engaging case-based approach to learning the diagnostic process in internal medicine Symptom to Diagnosis, Fourth Edition teaches an evidence-based, step-by-step process for evaluating, diagnosing, and treating patients based on their clinical complaints. By applying this process clinicians will be able to recognize specific diseases and prescribe the most effective therapy. Each chapter is built around a common patient complaint that illustrates essential concepts and provides insight into the process by which the differential diagnosis is identified. As the case progresses, clinical reasoning is explained in detail. The differential diagnosis for that particular case is summarized in tables that highlight the clinical clues and important tests for the leading diagnostic hypothesis and alternative diagnostic hypotheses. As the chapter progresses, the pertinent diseases are reviewed. Just as in real life, the case unfolds in a stepwise fashion as tests are performed and diagnoses are confirmed or refuted. Completely updated to reflect the latest research in clinical medicine, this fourth edition is enhanced by algorithms, summary tables, questions that direct evaluation, and an examination of recently developed diagnostic tools and guidelines. Clinical pearls are featured in every chapter. Coverage for each disease includes: Textbook Presentation, Disease Highlights, Evidence-Based Diagnosis, and Treatment. 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. This interactive app contains the full content of Symptom to Diagnosis: An Evidence-Based Guide, Fourth Edition by McGraw-Hill Education. ISBN-13: 978-1260121117 ISBN-10: 1260121119 Editors: Scott D. C. Stern, MD, FACP Adam S. Cifu, MD, FACP Diane Altkorn, MD, FACP 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

Virtualis

This AI-powered communication app helps healthcare teams streamline patient care. It allows nurses and physicians to create consultation requests, automatically grades patient acuity, and recommends specialties. Users can also engage in direct and group chats.

Highlights
  • AI-powered acuity grading
  • Consultation request creation
  • Specialty recommendations
  • Direct and group chat
  • Patient condition assessment
Features
Read full description

Virtualis is a AI-powered clinical acuity graded communication application conceived by healthcare practitioners for healthcare and hospital teams. The mobile application enables healthcare nurses and physicians a communication and chat solution that allows users to: - Create consultation requests to physicians and nurse practitioners based on patient disposition. - Virtualis uses a proprietary LLM to automatically grade inputted patient condition based on low, moderate or high acuity levels - Acuity levels are graded red, yellow or greeen and users can be recommended a specialty based on acuity scope - Users can also direct chat and group chat with other users of the platform.

Screenshots

Symptom to Diagnosis 4/E4 screens
Virtualis4 screens

Verdict

The call

The clearest difference is price: Virtualis at Free against Symptom to Diagnosis 4/E's $49.99. Virtualis also leads on update cadence (every 8 days vs every 8 months). Symptom to Diagnosis 4/E's advantage is iOS requirement (10.0 vs 15.6). On ads, 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

Virtualis is free to download; Symptom to Diagnosis 4/E costs $49.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Symptom to Diagnosis 4/E ships an update every 8 months, Virtualis every 8 days. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Symptom to Diagnosis 4/E versus Virtualis: the parameters behind the verdict, then further details
ParameterSymptom to Diagnosis 4/EVirtualis
Price$49.99Free — better
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 8 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better15.6
Further details — not scored
Size89 MB38 MB
Age rating17+4+
DeveloperUsatine & Erickson Media LLCLiveMed Health

In-app purchases

None

Symptom to Diagnosis 4/E

No in-app purchases

None

Virtualis

No in-app purchases

Questions

Is Symptom to Diagnosis 4/E free?
Symptom to Diagnosis 4/E costs $49.99, with no in-app purchases.
Is Virtualis free?
Virtualis is free to download, with no in-app purchases.
Do Symptom to Diagnosis 4/E or Virtualis have ads?
Neither Symptom to Diagnosis 4/E nor Virtualis shows ads.
Which is updated more often, Symptom to Diagnosis 4/E or Virtualis?
Symptom to Diagnosis 4/E ships an update every 8 months, and Virtualis every 8 days. Most recently, Symptom to Diagnosis 4/E was updated on October 7, 2026 and Virtualis on October 11, 2026.

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