Abacus Lesson - ADD and SUB -
Contains adsIn-app purchases
4.7star
6.14K reviewsinfo
100K+
Downloads
PEGI 3
info
About this app
An abacus is named "Soroban" in Japan. Do you know what an abacus is? The abacus is very simple calculator used in China, Japan, Korea and so on. Some people may say "Isn't it an unnecessary tool if you have a calculator such as a smartphone?". Answer would be "No".
The biggest difference between electric calculators and the abacus is whether you need to hold it in your hand when calculating. Because of its simplicity, you will be able to easily use the abacus in your mind.
Imagine that you can use calculations of about 3 digits in your life without physical tools.
This app will give you the skill of calculation.
◆Twitter
https://twitter.com/p4pLIabLM00qnqn
◆Instagram
https://www.instagram.com/hirokuma.app/
The biggest difference between electric calculators and the abacus is whether you need to hold it in your hand when calculating. Because of its simplicity, you will be able to easily use the abacus in your mind.
Imagine that you can use calculations of about 3 digits in your life without physical tools.
This app will give you the skill of calculation.
https://twitter.com/p4pLIabLM00qnqn
https://www.instagram.com/hirokuma.app/
Updated on
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.
This app may share these data types with third parties
Location, Web browsing and 2 others
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted
Ratings and reviews
4.8
5.64K reviews
David Whittaker
- Flag inappropriate
- Show review history
October 29, 2022
A well thought-out and useful app. Great for learning or relearning basic maths Suggestions are to have the option of turning the sound off as it can disturb others when I use it on the train. Also needs a part of the app that is a pure abicus when the user comes to the end of the lessons. Last part is the adds. I would have preferred to spend a few dollars on this app and own my copy outright than experience the advertising.
116 people found this review helpful
Parth Jha
- Flag inappropriate
February 16, 2025
An introductory application for abacus. I liked the interface, language used is simple and understandable. There are lessons and pratice sessions and finally a test. I liked the format. Worth trying.
Lura Capalongan
- Flag inappropriate
- Show review history
October 10, 2021
I've tried a few other abacus apps and feel this one allows breaks concepts down into smaller components which allows you to master each step before adding more. It's also easy to revisit a certain aspect of skill that needs brushing up. This is my favorite app so far.
33 people found this review helpful
Hirokuma.App
October 10, 2021
Thank you for your rating and comments. If you find it wonderful, we would appreciate it if you could give it a high rating.
What’s new
Updated library
App support
About the developer
