Comparison

Guide to Diagnostic Tests vs VanderbiltDDx

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

Head to head
About

Guide to Diagnostic Tests

Access evidence-based information on over 450 diagnostic tests, including lab work, imaging, and therapeutic monitoring. This resource helps healthcare professionals quickly find answers to common questions about test selection, interpretation, and patient preparation.

Highlights
  • 450+ diagnostic tests
  • Evidence-based recommendations
  • Algorithms, tables, and charts
  • PubMed links
  • Custom notes and highlighting
  • Full-text search
  • Favorites for bookmarking
Features
Read full description

ABOUT GUIDE TO DIAGNOSTIC TESTS Pocket Guide to Diagnostic Tests, provides immediate, evidence-based information on the selection and interpretation of commonly used laboratory and electrocardiographic tests, diagnostic imaging, and therapeutic monitoring. Including more than 450 updated diagnostic tests, this mobile resource is ideal for answering questions encountered daily by physicians, nurses, students, and other healthcare professionals, such as: • Which test is best to diagnose or follow a patient’s condition? • What is the correct interpretation of an abnormal diagnostic test? • How do I collect the appropriate specimen or prepare the patient for testing? • Where can I find more information on this test in the medical literature? FEATURES • 450+ updated laboratory and diagnostic tests • Evidence-based recommendations • New and updated coverage of emerging and re-emerging pathogens and infectious agents • Extensive use of algorithms, tables, and charts • PubMed links directly to journal citations and available articles • Highlight and make custom notes within any entry • Full Text Search – find topics across from any entry • ‘Favorites’ for bookmarking important entries Editors: Diana Nicoll, MD, PhD, MPA; Chuanyi Mark Lu, MD; Stephen J. McPhee, MD Publisher: McGraw Hill Powered by: Unbound Medicine

About

VanderbiltDDx

Practice and refine your diagnostic skills with realistic patient cases. This app generates logically consistent findings based on a vast knowledge base of disorders and their associated symptoms. It helps users identify hypotheses, assess evidence, and review disorder information for improved learning.

Highlights
  • Realistic patient case generation
  • Evidence-based knowledge base
  • Hypothesis testing and assessment
  • Performance evaluation
  • Disorder-related information review
  • Customizable difficulty levels
Read full description

The VanderbiltDDx Case Simulator (“App”) helps users to practice and refine their diagnostic skills. It creates realistic, fun, easy-to-evaluate adult (age 16-75+) patient cases. The intended audience includes medical, nursing, physician assistant, and other health professional students; physicians undergoing residency and fellowship training; nurses in advanced practice training; and practicing health professionals. The App generates cases using a large, evidence-based, literature- derived knowledge base (630+ disorders seen by internists, 4500+ findings). To construct each simulated case, the App randomly selects logically consistent findings based on how often the literature indicates the findings occur in patients with the targeted disorder. Vanderbilt is distributing the App free-of-charge via its Portal on the App Store for use in clinical education. The App, once installed, is self-contained on users’ iOS devices. It does not transmit any information about the user or use of the App. Typical App workflow is as follows: (1) User sets difficulty level/clinical focus; starts random simulated case. (2) App randomly selects a disorder and displays initial set of findings. (3) User, via App, elicits additional findings (i.e., works up case). (4) App shows potential diagnoses matching known case findings. (5) App indicates how well the known case findings support or refute selected hypotheses. User identifies their three most favored hypotheses. (6) User rates “strength of evidence” supporting top three hypotheses. (7) App discloses answer and assesses user’s performance. (8) User gains knowledge by reviewing disorder-related information. Users can provide feedback to the development team regarding bugs and suggestions to make the App more useful. Send such comments to: vanderbiltddx@icloud.com The App’s primary developer, Randolph A. Miller, MD, is Professor Emeritus of Biomedical Informatics and Medicine at Vanderbilt University School of Medicine. He was the founding Chair of Vanderbilt’s Department of Biomedical Informatics and is a Past President of both the American Medical Informatics Association (AMIA), and the American College of Medical Informatics.

Screenshots

Guide to Diagnostic Tests4 screens
VanderbiltDDx4 screens

Verdict

The call

The clearest difference is in-app purchases: VanderbiltDDx at none against Guide to Diagnostic Tests's 1. VanderbiltDDx also leads on rating (5.0 vs 4.6) and iOS requirement (13.5 vs 15.0). Guide to Diagnostic Tests's advantage is ratings volume (35 vs 1). On price, ads 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

Both are free to download. Guide to Diagnostic Tests sells 1 one-off in-app purchase. VanderbiltDDx asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

VanderbiltDDx holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Guide to Diagnostic Tests has 35 ratings behind it against 1, so its average is the more settled of the two.

Scorecard5 real differences · 5 level
Guide to Diagnostic Tests versus VanderbiltDDx: the parameters behind the verdict, then further details
ParameterGuide to Diagnostic TestsVanderbiltDDx
PriceFreeFree
Rating4.6 (35 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings35 — better1
Update frequencyEvery 10 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.5 — better
Further details — not scored
Size10 MB28 MB
Age rating17+4+
DeveloperUnbound Medicine, Inc.Vanderbilt University Medical Center

Customer experience

Guide to Diagnostic Tests

All ratings35 ratings
Positive88.6%
Neutral5.7%
Negative5.7%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

VanderbiltDDx

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Guide to Diagnostic Tests

One-time1
  • Pocket Guide to Diagnostic Tests$54.99
None

VanderbiltDDx

No in-app purchases

Questions

Is Guide to Diagnostic Tests free?
Guide to Diagnostic Tests is free to download, with in-app purchases available.
Is VanderbiltDDx free?
VanderbiltDDx is free to download, with no in-app purchases.
Which has better reviews, Guide to Diagnostic Tests or VanderbiltDDx?
VanderbiltDDx is rated higher. Guide to Diagnostic Tests averages 4.6 out of 5 from 35 ratings, while VanderbiltDDx averages 5.0 from 1 ratings.
Do Guide to Diagnostic Tests or VanderbiltDDx have ads?
Neither Guide to Diagnostic Tests nor VanderbiltDDx shows ads.

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