Fellow
Excellent evidence-based diagnostic tool for infectious diseases with supplemental clinical information.
Archived App (Last seen on 20 Jul 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This medical app provides physicians and students with clinical decision tools for diagnosing infectious diseases. It uses evidence-based medicine principles, including risk scores and algorithms, to help users calculate post-test probabilities for accurate diagnoses.
✓Clinical decision tools
✓Risk scores and algorithms
✓Diagnostic criteria and classifications
✓Evidence-based medicine principles
✓Pre and post-test probability calculation
✓Condition-specific information
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What's New in iDx Essentials
1.0
July 24, 2018
This app has been updated by Apple to display the Apple Watch app icon.
User reviews
FAQ
What is iDx Essentials?
iDx Essentials is a medical application designed to assist healthcare professionals and students in diagnosing infectious diseases. It provides clinical decision tools such as risk scores, algorithms, and diagnostic criteria based on evidence-based medicine principles.
Who is iDx Essentials for?
This app is intended for use by physicians, physician assistants, nurse practitioners, pharmacists, and medical students. It aims to aid in the accurate diagnosis of commonly encountered infectious disease conditions.
How does iDx Essentials calculate probabilities?
Users can adjust the pre-test probability using a slider based on local prevalence or use the literature-supported probability. The app then automatically calculates the post-test probability by incorporating applicable likelihood ratio findings from the patient's workup.
Where can I find more information about each condition in iDx Essentials?
An 'Additional Information' screen is available for each condition, accessible by selecting the Rx icon. This screen provides details on pathophysiology, clinical features, examination maneuvers, microbiology, diagnostic testing, and treatment, all well-documented with references.
Is iDx Essentials peer-reviewed?
Yes, iDx Essentials has been peer-reviewed by board-certified physicians. The information contained within the app is well-documented and includes references to source scientific peer-reviewed published papers.
What devices does iDx Essentials support?
iDx Essentials is available for iPhone, iPad, and iPod. It is designed for iOS devices.
What is the age rating for iDx Essentials?
The age rating for iDx Essentials is 17+. This is typical for medical reference applications that contain complex clinical information.
Does iDx Essentials have ads?
No, iDx Essentials does not contain advertisements. The app is free to download and use without any ad interruptions.
