# Napier's Bones Simulation

> Napier's Bones Simulation (iPhone/iPad app by Ventura Educational Systems.)

- Source: https://appshunter.io/ios/app/napiers-bones-simulation/id1093899282 (this page in markdown: same URL + `.md`)
- Developer: [Ventura Educational Systems](https://appshunter.io/developer/371324172)
- Category: Education, Games
- Price: $1.99
- Age rating: 4+
- Requires: iOS 12.0 · 29 MB
- Languages: American English
- Released: 2016-03-24
- Data updated: 2026-06-06
- User reviews in markdown: https://appshunter.io/ios/app/napiers-bones-simulation/id1093899282/reviews.md

## What is Napier's Bones Simulation?

John Napier's contribution to mathematics was truly significant.  Born in Scotland, Napier studied as a mathematician, physicist and astronomer.  

He is best known as the inventor of logarithms, but he also invented one of the first computing devices.  The device, known as Napier's Bones, is manually operated and can be used to find the products and quotients of numbers.

Napier's device was based on Arab mathematics and used the lattice method of multiplication.  Each of the rods are inscribed with the multiplication tables for a specific number.  By arranging the rods on the board, the product of two numbers can be found by performing addition operations.

Use the Napier's Bones app to learn how one of the earliest calculating devices worked.  More than 400 years ago, people used Napier's Bones to find the product of large numbers.  In using this simulation you will discover a new way to multiply.  Have fun!


## Version history (last 5 releases)

### 3.0 — 2024-05-20

This version provides an update to recommended settings.

### 2.1 — 2021-10-27

This new version provides support for iPhones.

### 2.0 — 2021-04-13

Included in this update is a change to the metadata regarding App Privacy.  No user data is collected from this app.  In addition metadata support for iPad Pro (3rd Gen) 12.9" display is provided.  This update also provides a synthetic speech feature.

### 1.2 — 2020-06-09

This new version has a few improvements to the display when editing a multiplier. It also provides support for iPad Pro (3rd Gen) with12.9" Display.

### 1.1 — 2018-04-08

This new version provides support for iOS 11.

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## More apps by Ventura Educational Systems

- [Alphabet Animals](https://appshunter.io/ios/app/alphabet-animals/id371324169)
- [Colors & Shapes](https://appshunter.io/ios/app/colors-and-shapes/id375684455)
- [Numbers 123](https://appshunter.io/ios/app/numbers-123/id381591365)
- [Addition Facts](https://appshunter.io/ios/app/addition-facts/id385473597)
- [Fractions: The Whole Story](https://appshunter.io/ios/app/fractions-the-whole-story/id393882237)
- [Plexers](https://appshunter.io/ios/app/plexers/id411518808)

All apps by Ventura Educational Systems: https://appshunter.io/developer/371324172

## Related topics

[ventura educational systems](https://appshunter.io/ios/topics/ventura-educational-systems)

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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 2026-06-06.*