# iDx Essentials — Clinical Infectious Diseases

> Clinical decision support tool for diagnosing infectious diseases using evidence-based medicine. (iPhone/iPad app by Eric Washburn.)

- Source: https://appshunter.io/ios/app/idx-essentials/id1379602100 (this page in markdown: same URL + `.md`)
- Developer: [Eric Washburn](https://appshunter.io/developer/1379602099)
- Category: Medical, Health & Fitness
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 17+
- Requires: iOS 8.0 · 6 MB
- Languages: American English
- Released: 2018-07-24
- Data updated: 2026-07-20
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/idx-essentials/id1379602100/reviews.md

## What is iDx Essentials?

iDiagnose is created by a board-certified physician for use by physicians, physician assistants, nurse practitioners, pharmacists, and medical students. The app is peer-reviewed by board-certified physicians. This simple yet sleek app provides access to easy-to-use clinical decision tools including risk scores, algorithms, equations, diagnostic criteria, classifications and more.
iDiagnose is a unique medical application which allows users to confidently diagnose commonly encountered infectious diseases (ID) conditions. Evidence based medicine is the use of mathematical estimates of the risk of benefit and harm to inform clinical decision-making in the diagnosis, investigation or management of individual patients. Using evidence-based medicine principles, derived from high-quality research on population samples, iDiagnose attempts to aid physicians in the difficult task of providing the most accurate evidence-based diagnosis through the use of pre and post-test probabilities and likelihood ratios. 
iDiagnose is a simple to use medical app that provides a list of diagnoses or conditions from which users may select. Once users are on the Condition screen they have the ability to adjust the pre-test probability by moving a slider based upon local prevalence. Otherwise, the pre-test probability supported by current literature is used. Users then tap on the applicable positive or negative likelihood ratio findings from their workup so that the post-test probability is automatically calculated at the bottom of the app. Some conditions use diagnostic criteria or algorithms, based on published medical literature or published guidelines to either include or refuse diagnoses.  
Data about pathophysiology, clinical features, examination maneuvers, microbiology, diagnostic testing, and treatment is available on the Additional Information screen with each condition from which users may view by selecting the Rx icon at the top of the app. The information contained within the app is well documented and contains references to source scientific peer-reviewed published papers.

## Key features

- Clinical decision tools
- Risk scores and algorithms
- Diagnostic criteria and classifications
- Evidence-based medicine principles
- Pre and post-test probability calculation
- Condition-specific information

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/idx-essentials/id1379602100/reviews.md

### 5/5 — Fellow

*2019-11-03*

Excellent evidence-based diagnostic tool for infectious diseases with supplemental clinical information.

## Frequently asked questions about iDx Essentials

### 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.

## Version history (last 1 release)

### 1.0 — 2018-07-24

This app has been updated by Apple to display the Apple Watch app icon.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-20.*