Simple Soroban

Btco

About this app

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

Ratings and reviews

I hardly write app reviews but I'm really enjoying this app. It's simple and effective, with better instructions than what I often find. It's informative and still feels like a relaxing game while you learn and practice. A couple of suggestions that I find myself wishing for are a retry button even after a correct answer, so I can go back and really understand how I arrived at the answer, and a place I can view the formulas presented at the end of tutorials without going back through them.

I originally got this app to help teach my kindergartener basic arithmetic, and now it is my own go to game. The app is simple and runs exceptionally well. I love the challenge and relax options. It has made my own mental math so much faster. The education tab is simple and easy to understand. If anyone wants to learn how to use an abacus or soroban, this is the perfect way to do it.

It is a fantastic tool to learn soroban math and to promote mental arithmetic. I am learning it to teach my 14-year old twins, and using this app with it's instructions, practice exercises and challenges, it has taken me less than a week to master addition and subtraction of multiple digits. I've started learning multiplication and division, and this app is simply an indispensable aid to learning the soroban. Highly recommended, simple, elegant, to-the-point with absolutely no noise!

What’s new

* Layout and color palette adjustments
* Bug fixes and performance improvements