Apps by Keiji Matsui
Bayes' post-test probability calculator app icon

Medical

Bayes' post-test probability calculator

Keiji Matsui

Free download 3.67 · 1 storefront · 3 ratings In-app purchases unconfirmed
Open on Apple

About this app

Bayes’ post-test probability calculator, an iPhone / iPod touch application, calculates the post-test probability of diseases from pre-test probability and sensitivity of the test and specificity of the test. positive result: post-test probability for positive result negative result: post-test probability for negative result

Latest release

What’s New

Version 3.0 Feb 9, 2016

This update from Apple will improve the functionality of this app. No new features are included. It can be used on an Apple Watch.

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
3 ratings
3 Aug 12, 2026 · 3 ratings Aug 12, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free
Price history
Current Free
Free Aug 12, 2026 · Free Aug 12, 2026 · Free Aug 12, 2026 Aug 12, 2026
  1. First observed Aug 12, 2026 · 5:16 PM Free

Screenshots

Bayes' post-test probability calculator iPhone screenshot