Simple Soroban

Installs

1.3m

Rating

4.8

Rating count

9.9k

Category	Education
Developer	Bruno Takahashi Carvalhas de Oliveira
Price	Free
First release	8/8/2014 (11 years ago)
Version	2.1.4
In-app purchases	No
Contains ads	No
Content rating	Rated for 3+
Package name	br.net.btco.soroban

View on Play Store

Core Metrics

Data Breakdown

Date	Rating Count	Average Rating	Installs	Version
6/13/2025	9,855	4.810	1,254,529	2.1.4
6/8/2025	9,846	4.810	1,251,792	N/A
5/24/2025	9,817	4.810	1,245,258	N/A
5/22/2025	9,810	4.810	1,244,378	N/A

Details

This application is a simple Japanese abacus (soroban / そろばん). It has a free mode where you can use the abacus freely, and a challenge mode with 4 operations (addition, subtraction, one and two digit multiplication, and division) and 3 difficulty levels (easy, medium, hard) where you must race against the clock to perform calculations.

Contains tutorials for:
* basic concepts
* addition
* subtraction
* one-digit multiplication
* two-digit multiplication
* division

Also has a custom challenge mode where you can set the number of questions, type of questions and difficulty.

(This is just a hobby project I'm doing for fun. This app is free and doesn't have in-app purchases or ads).

[PERMISSIONS USAGE]
This is a description of how permissions are used in this app.
Vibrate: The application can vibrate the phone to give user feedback. This can be enabled/disabled in the Settings screen.

[PRIVACY]
This application does not collect or transmit any data. Your settings, ranking and challenge times are stored locally on your phone only.
You can view the privacy policy here: http://bit.ly/simple-soroban-privacy

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