About Abacus Lesson
356+735+195, 23x89, 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...
356+735+195, 23x89, 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 training methods such as training focusing on finger movements and mental arithmetic training to improve mental arithmetic in order to learn abacus more efficiently. And various improvements have been made. - Either vertical screen or horizontal screen can be selected. - The position and size of the abacus and window can be freely laid out. - No ads. - Added sound variations. Volume control can also be finely set. - The color of the abacus can be set freely. - Earn a trophy by achieving the goal. - Smoother operability by optimizing the app. ◆Support web page https://hirokuma.blog/?p=4427
Version History Updated IAP Library. Fixed an issue that fail to verify receipts signed with sha-256 1.1.5 09/10/2023 Fixed minor bugs. 1.1.4 09/09/2023 Fixed minor bugs. Improved operability of the abacus. 1.0.8 01/17/2022 Improved operability of the abacus 1.0.7 01/17/2022 Fixed Typo in setting menu. 1.0.6 01/04/2022 Added a vibration feature that works with the movement of the abacus It can be enabled in the settings menu. 1.0.5 12/29/2021 Fixed minor bugs. Fixed typos. 1.0.4 12/22/2021 Fixed an issue that beads would make a sound with just a touch. 1.0.3 12/21/2021 Fixed minor bugs. 1.0.2 12/20/2021 1.0 12/19/2021
Previous Versions
Here you can find the changelog of Abacus Lesson since it was posted on our website on 2023-03-27 16:58:03.
The latest version is 1.1.5 and it was updated on 2026-06-23 06:13:30. See below the changes in each version.
Abacus Lesson version 1.1.5
Updated At: 2026-06-02
Changes: Version History Updated IAP Library.
Fixed an issue that fail to verify receipts signed with sha-256 1.1.5 09/10/2023 Fixed minor bugs. 1.1.4 09/09/2023 Fixed minor bugs.
Improved operability of the abacus. 1.0.8 01/17/2022 Improved operability of the abacus 1.0.7 01/17/2022 Fixed Typo in setting menu. 1.0.6 01/04/2022 Added a vibration feature that works with the movement of the abacus
It can be enabled in the settings menu. 1.0.5 12/29/2021 Fixed minor bugs.
Fixed typos. 1.0.4 12/22/2021 Fixed an issue that beads would make a sound with just a touch. 1.0.3 12/21/2021 Fixed minor bugs. 1.0.2 12/20/2021 1.0 12/19/2021
Abacus Lesson version 1.1.5
Updated At: 2023-09-10
Changes: Sep 10, 2023
Version 1.1.5
Updated IAP Library.
Fixed an issue that fail to verify receipts signed with sha-256
Abacus Lesson version 1.1.5
Updated At: 2023-09-10
Changes: Updated IAP Library.
Fixed an issue that fail to verify receipts signed with sha-256
Abacus Lesson version 1.1.4
Updated At: 2023-09-09
Changes: Sep 9, 2023
Version 1.1.4
Fixed minor bugs.
Abacus Lesson version 1.0.8
Updated At: 2022-01-17
Changes: Jan 17, 2022
Version 1.0.8
Fixed minor bugs.
Improved operability of the abacus.
Disclaimer
Official App Store Link
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