# Bias Cure — Bayesian Test Interpretation

> Medical app for interpreting test results using Bayesian probability. (iPhone/iPad app by Todd Doersch.)

- Source: https://appshunter.io/ios/app/bias-cure/id6761279113 (this page in markdown: same URL + `.md`)
- Developer: [Todd Doersch](https://appshunter.io/developer/1888590838)
- Category: Medical
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 17+
- Requires: iOS 17.0 · 2 MB
- Languages: English
- Released: 2026-04-03
- Data updated: 2026-06-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/bias-cure/id6761279113/reviews.md

## What is Bias Cure?

Bias Cure supports transparent reasoning. It helps doctors and clinicians correctly interpret and communicate test results to their patients.

The chances of having a particular cancer, given a positive test result, are not *at all* the same as the chances of getting a positive test result, given a person has that cancer. This app cuts through that confusion and provides the former number, the probability the patient *really* wants to know.

Start with a possible "condition", add one or more test results, and watch the probability of having that condition update step by step. The app includes a an enlarged library of conditions and tests, but users also can enter any disease and diagnostic test manually and edit sensitivity and specificity values freely. The accuracy of the tests in the included library is backed by peer-reviewed research articles cited in the Validation Report, so users can go back to the original sources for more granular detail.

Bias Cure includes transparent sequential probability updating, individual 2x2 tables for test interpretation, a visual probability trend graph, and a printable validation PDF that shows the intermediate steps behind the final result along with source citations. Built-in Help pages explain Bayes' theorem, the 2x2 table, and how to enter and interpret test data.

Bias Cure is an educational and decision-support aid. It does not provide medical advice, does not replace clinical judgment, and should not be used as the sole basis for diagnosis or treatment decisions.

## Key features

- Transparent sequential probability updating
- Individual 2x2 tables for test interpretation
- Visual probability trend graph
- Printable validation PDF with source citations
- Extensive library of conditions and tests
- Manual entry of custom diseases and tests
- Built-in help pages explaining Bayes' theorem


## Frequently asked questions about Bias Cure

### What is Bias Cure?

Bias Cure is a medical app designed to help doctors and clinicians accurately interpret test results and communicate probabilities to patients. It clarifies the difference between pre-test and post-test probabilities using Bayesian reasoning.

### How does Bias Cure work?

You input a possible condition and one or more test results. The app then updates the probability of having that condition step-by-step, providing clear explanations and visual aids.

### Can I add my own conditions and tests to Bias Cure?

Yes, users can manually enter any disease and diagnostic test, and freely edit sensitivity and specificity values. This allows for personalized interpretation beyond the app's built-in library.

### Is Bias Cure accurate?

The accuracy of tests in the app's library is backed by peer-reviewed research articles cited in the Validation Report. Users can refer to these sources for more detailed information.

### Does Bias Cure provide medical advice?

No, Bias Cure is an educational and decision-support aid. It does not provide medical advice and should not be used as the sole basis for diagnosis or treatment decisions.

### What devices support Bias Cure?

Bias Cure is available on iPhone and iPad, making it accessible for a wide range of medical professionals and patients on Apple devices.

### How often is Bias Cure updated?

The latest version of Bias Cure is 1.3, which was last updated on April 27, 2026. This indicates active development and maintenance of the application.

### Does Bias Cure have ads?

No, Bias Cure does not contain advertisements. It is a free application focused on providing a clear and uninterrupted user experience for medical professionals and patients.

## Version history (last 2 releases)

### 1.3 — 2026-04-27

Version 1.3 adds locally saved cases, allowing users to save and reopen a testing sequence without re-entering prior results.

This update also expands coverage to 65 Conditions and 181 Condition-test pairs, improves the first-screen prevalence controls, and fixes several minor bugs.

### 1.0 — 2026-04-03

No release notes.

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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 2026-06-26.*