The Abacus. Simple, yet still very much useful.
Practical calculations can be done, and mental calculation is much faster when you think abacus.

Go classic, go 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

Version 1.1

This app has been updated by Apple to use the latest Apple signing certificate.

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

App Privacy

The developer, Switt Kongdachalert, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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