Comparison

Guide to Diagnostic Tests vs Digi

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

Digi

Practice diagnostic reasoning with simulated patient cases. Make informed decisions on diagnostic tests and patient management, comparing your efficiency and cost to experienced clinicians. Learn from feedback and access relevant literature.

Highlights
  • Simulated patient cases
  • Diagnostic test selection
  • Patient management choices
  • Cost comparison to experts
  • Clinical feedback
  • Hyperlinks to literature
Features
Read full description

This app is designed for early clinicians to practice using diagnostic testing to arrive at a simulated patient's diagnosis. Patient histories are provided - the goal of playing is to choose diagnostic tests to get to the right diagnosis as efficiently as possible. Each test accrues additional expense, and users can compare their costs to that of the experienced clinician. Just as in real life, making incorrect choices still provides valuable learning as feedback from experienced clinicians follows diagnosis selections. In addition, some cases will also provide opportunity for making choices in patient management, with clinical feedback provided for all selections. Hyperlinks to relevant literature are included for easy access to further information. Once diagnosis is made, users will have opportunity to provide specific feedback through a survey link - we hope you'll fill it out and help faculty make this as useful a learning tool as possible! This app was built through a partnership between Jump Simulation and faculty from the University of Illinois College of Medicine.

Screenshots

Guide to Diagnostic Tests4 screens
Digi4 screens

Verdict

The call

The clearest difference is rating: Guide to Diagnostic Tests at 4.6 against Digi's 3.7. Guide to Diagnostic Tests also leads on ratings volume (35 vs 3). Digi's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 9 months). On price, review sentiment, 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. Digi asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Guide to Diagnostic Tests holds the better App Store score, 4.6 against 3.7. That said, the two scores are not equally well evidenced: Guide to Diagnostic Tests has 35 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

Guide to Diagnostic Tests ships an update every 9 months, Digi every 2 months. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

Scorecard6 real differences · 4 level
Guide to Diagnostic Tests versus Digi: the parameters behind the verdict, then further details
ParameterGuide to Diagnostic TestsDigi
PriceFreeFree
Rating4.6 (35 ratings) — better3.7 (3 ratings)
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings35 — better3
Update frequencyEvery 9 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size10 MB95 MB
Age rating17+12+
DeveloperUnbound Medicine, Inc.OSF Healthcare System

Customer experience

Guide to Diagnostic Tests

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

Digi

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

Guide to Diagnostic Tests

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

Digi

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 Digi free?
Digi is free to download, with no in-app purchases.
Which has better reviews, Guide to Diagnostic Tests or Digi?
Guide to Diagnostic Tests is rated higher. Guide to Diagnostic Tests averages 4.6 out of 5 from 35 ratings, while Digi averages 3.7 from 3 ratings.
Do Guide to Diagnostic Tests or Digi have ads?
Neither Guide to Diagnostic Tests nor Digi shows ads.
Which is updated more often, Guide to Diagnostic Tests or Digi?
Guide to Diagnostic Tests ships an update every 9 months, and Digi every 2 months. Most recently, Guide to Diagnostic Tests was updated on October 24, 2026 and Digi on October 18, 2026.

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