# Epi Tools — Epidemiology Calculation Tool

> Epidemiology calculation tool for disease frequency, association, and sample size. (iPhone/iPad app by Mark Stevenson.)

- Source: https://appshunter.io/ios/app/epi-tools/id1611139482 (this page in markdown: same URL + `.md`)
- Developer: [Mark Stevenson](https://appshunter.io/developer/1611139484)
- Category: Education, Medical
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 12+
- Requires: iOS 13.4 · 19 MB
- Languages: American English
- Released: 2022-03-17
- Data updated: 2026-08-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/epi-tools/id1611139482/reviews.md

## What is Epi Tools?

Functions include measures of disease frequency (including confidence intervals for prevalence, incidence risk and incidence rates), measures of association and measures of effect (from 2 × 2 table data), various sample size calculators, diagnostic test validation, estimation of the post-test probability of disease, a random number generator and a comprehensive epidemiology glossary.

## Key features

- Measures of disease frequency with confidence intervals
- Measures of association and effect
- Sample size calculators
- Diagnostic test validation
- Post-test probability estimation
- Random number generator
- Epidemiology glossary

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/epi-tools/id1611139482/reviews.md

### 5/5 — Outstanding and Simple

*2023-08-04*

Very easy to understand the definitions, basic formula, highly highly recommended.

## Frequently asked questions about Epi Tools

### What are the main calculation functions in Epi Tools?

Epi Tools offers functions for disease frequency measures (prevalence, incidence risk, incidence rates) with confidence intervals, measures of association, and measures of effect. It also includes sample size calculators and diagnostic test validation.

### Does Epi Tools offer a glossary of epidemiological terms?

Yes, Epi Tools includes a comprehensive epidemiology glossary to help users understand key terminology.

### What is the age rating for Epi Tools?

Epi Tools has an age rating of 12+, making it suitable for older students and professionals.

### On which devices can I use Epi Tools?

Epi Tools is currently supported on iPhone and iPod devices.

### How often is Epi Tools updated?

The latest version, 1.2, was released on January 16, 2026, indicating regular updates to the application.

### Is Epi Tools free to use?

Yes, Epi Tools is available for free, with no cost to download or use its features.

### What is the user rating for Epi Tools?

Epi Tools has received an excellent rating of 5.0 stars from one user review.

### Does Epi Tools have ads?

No, Epi Tools does not contain advertisements, providing an uninterrupted user experience.

## Version history (last 5 releases)

### 1.2 — 2026-01-16

We’ve made performance improvements and bug fixes to enhance your experience

### 1.1 — 2026-01-15

"We’ve made performance improvements and bug fixes to enhance your experience

### 1.0.5 — 2024-02-24

Fix display image in glossary.

### 1.0.4 — 2023-03-18

Updated language options. Correct labelling in Disease Freedom - Two stage sampling.

### 1.0.3 — 2022-07-04

Add glossary items

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## Related topics

[sample size calculator app](https://appshunter.io/ios/topics/sample-size-calculator-app)

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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 2026-08-05.*