Simple Soroban

4.8
7.57K reviews
500K+
Downloads
Content rating
Everyone
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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
Updated on
Jan 18, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
4.8
7.57K reviews
A Google user
August 7, 2019
I like the straight forward simple interface and visual design. The timed challenges are great. I think the tutorials need more work; they are somewhat limited and don't allow you to experiment. They guide you through in only one approach and need more and varied examples. Otherwise this app works as advertised and I recommend it as good practice for adults new to the soroban.
21 people found this review helpful
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A Google user
September 14, 2019
I like it a lot . Good bead an overall sizing an colours , so it's easy to operate an practice proper technique . Great tutorials . A few more problems to solve might be even better ? . It's got me doing + - × 7594×45 etc . very satisfying . ÷ looks a bit more challenging . Has a challenge mode with online ranking/timing etc . fun , fun , get your kids one ! . Thank you .
13 people found this review helpful
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A Google user
February 23, 2019
It's really easy to use plus it's simple yet amazing because it applies 'less is more' for the design and appearacnce. And also it has complete tutorials which are completely understanadable for beginners and advanced. But when it comes to clearing the heavenly beads of the soroban/abacus, you really need to slide all of them upwards and it makes the user have a hard time to clear up the heavenly beads. What we want there is we can apply the fast teachnique of clearing the soroban/abacus.
13 people found this review helpful
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What's new

* Added Relax mode (solve problems to unlock badges)
* Added Anzan mode (invisible Soroban)
* Added "chained" mode to custom challenge
* Added sounds
* Fixed some layout problems
* Added a quit button
* Added setting to enable/disable highlighting of active beads.