Guide to Diagnostic Tests vs Ferri's Best Test
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 450+ diagnostic tests
- Evidence-based recommendations
- Algorithms, tables, and charts
- PubMed links
- Custom notes and highlighting
- Full-text search
- Favorites for bookmarking
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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
Ferri's Best Test
This medical reference app provides guidance on laboratory and imaging approaches for over 400 tests and 230 diseases. It features interactive flowcharts, IU units, and concise clinical material to aid in test selection and diagnostic skills.
- Over 400+ tests and labs
- Guidance on radio-logic & laboratory approaches
- 230+ common diseases
- Interactive flowcharts
- IU units for all tests
- SmartSearch technology
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"Try before you buy" - Download the FREE App, which includes sample content. An in-App purchase is required to unlock all content. Based on 4th print ed. Guidance on radio-logic & laboratory approaches. Over 400+ tests & labs. 230+ common diseases. Interactive flowcharts. IU units for all tests. Practical and concise, go-to reference for up-to-date clinical material on today's diagnostic testing and laboratory tests. Three convenient sections provide quick access to key information on clinical laboratory testing, diagnostic imaging, and diagnostic algorithms. Experienced author Dr. Fred Ferri uses a unique, easy-to-follow format to simplify complex information and help you choose the best test to supplement your clinical diagnostic skills. New to this Edition * Features a new appendix on when to use contrast agents in ordering CT and MRI scans. * Discusses new modalities including transient elastography (Fibroscan), CT enterography and CT enteroclysis. * Provides new comparison tables to easily evaluate the best test; new algorithms for evaluation of immunodeficiency and hematochezia; and new tables and illustrations throughout to improve your test selection. Key Features * Includes both lab and imaging tests for concise, convenient access to all diagnostic test options for more than 200 common diseases and disorders. * Includes essential information on indications, advantages, disadvantages, approximate costs, normal ranges, typical abnormalities, likeliest causes, and more. No internet connection is required to access the content after the initial download. Find information quickly using powerful SmartSearch technology. Search part of term for those hard to spell medical terms. Content licensed from printed ISBN 10: 0323511406 Content licensed from printed ISBN 13: 9780323511407 If you have any questions or comments, email us any time: customersupport@skyscape.com or call 508-299-30000 Privacy Policy-https://www.skyscape.com/terms-of-service/privacypolicy.aspx Terms and Conditions-https://www.skyscape.com/terms-of-service/licenseagreement.aspx Editor(s): Fred F. Ferri, MD, FACP Publisher: Mosby | Elsevier, Inc.
Screenshots
Verdict
The clearest difference is ads: Guide to Diagnostic Tests at none against Ferri's Best Test's shown. Ferri's Best Test's advantage is rating (4.8 vs 4.6) and iOS requirement (13.0 vs 15.0). On price, ratings volume, update cadence and in-app purchases 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
Both are free to download. Guide to Diagnostic Tests sells 1 one-off in-app purchase and Ferri's Best Test sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Ferri's Best Test holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 35 and 26 respectively.
Guide to Diagnostic Tests ships an update every 9 months, Ferri's Best Test every 6 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.
| Parameter | Guide to Diagnostic Tests | Ferri's Best Test |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (35 ratings) | 4.8 (26 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 35 — better | 26 |
| Update frequency | Every 9 months | Every 6 months — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 149 MB |
| Age rating | 17+ | 17+ |
| Developer | Unbound Medicine, Inc. | Skyscape Medpresso Inc |
Customer experience
Guide to Diagnostic Tests
Ferri's Best Test
In-app purchases
Guide to Diagnostic Tests
- Pocket Guide to Diagnostic Tests$54.99
Ferri's Best Test
- Ferri's Best Test - Lab & Diag$40.99
Questions
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Is Ferri's Best Test free?
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