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

Medical

Bayes' post-test probability calculator

Keiji Matsui

Free 3.67 · 1 storefront · 3 ratings No in-app purchases
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

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 0×
Price history
Current Free
Free Aug 12, 2026 · Free Sep 30, 2026 · Free Aug 12, 2026 Sep 30, 2026
  1. First observed Aug 12, 2026 · 5:16 PM Free

Screenshots

Bayes' post-test probability calculator iPhone screenshot