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17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Abacus - Simple Soroban Abacus Screenshots

iPad

iPhone

About Abacus - Simple Soroban Abacus

A simple soroban abacus that also shows the number representing the value of each column.

An abacus is a tool that has been used since ancient times to calculate. Calculations with numbers in the millions have been performed using the abacus, showing that it is a powerful tool.

Mental math can be performed incredibly accurately by those who have mastered the abacus. And after witnessing some incredible mental math skills by a person who has used an abacus during his early years as a salesman, I decided to create a "beginner's abacus" based on the soroban abacus, which is a Japanese variant of the abacus.

I hope this app will be of use to many people who are starting some interest in the abacus.

[ Usage ] :
= swipe up/down on the beads to make them move.
= Shake the device to reset the beads.
= Numbers on the top show the "actual" numbers of each column

What's New in the Latest Version 1.1

Last updated on Nov 20, 2017

Old Versions

This app has been updated by Apple to display the Apple Watch app icon.

- Can now slide finger across to move beads; smoother operation.
- Can now adjust number of columns!
- Now supports both iPhone and iPad.

Version History

1.1

Nov 20, 2017

1.0

Apr 5, 2014

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