356+735+195, 23×89, 5626÷58, Can you solve each in 5 sec by mental arithmetic? The goal of this app is to learn abacus and solve these problems in mental arithmetic within 5 seconds. All lessons of the abacus lesson series, which have been highly evaluated all over the world, are recorded. The lessons have been reworked in a more polite and easy-to-understand. In addition, we have added unique t... - More info on Abacus Lesson...

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. Be... - More info on Abacus Lesson -Multi...

This app focuses on the ease of use of the abacus on the app, and aims to realize smooth and comfortable operability. In addition to being able to use the abacus widely on the horizontal screen, the size and position can be freely customized according to the device. The number of digits can be used up to 15 digits, and the color and sound of the beads can also be set. You can challenge the addit... - More info on Abacus Exercise...

This is an app that you can learn addition and subtraction using an abacus. 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 an... - More info on Abacus Lesson -ADD a...

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. Be... - More info on Abacus Lesson - Divi...

You can get the following Camera Device Information on the unity platform . - Camera ID - Available Resolutions - Rotations - Sensor Orientations - Width and Height - More info on Camera Info...

　シンプルな植物観察の日記帳です。昨今の自粛生活で家で家庭菜園やお花を育てる始めたというかた、シンプル観察日記で植物の成長を残してみませんか？ 　主な機能はこちら！ 　　https://hirokuma.blog/?p=2379 　このアプリはシンプルで簡単に植物の観察日記を書くことができます。難しい操作の... - More info on ...

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