The こんたのそろばん練習アプリ is a practice app for the abacus, also known as the soroban. The app has recently been updated and now features a navigation system led by the character こんたくん. With this app, you can customize various settings such as the timing of problem prompts (manual or every 5 seconds), the number of problems and categories, and whether to focus on addition or both addition and subtraction.

To start practicing, simply press the [珠払] button. Additionally, the app allows you to choose from three different sizes for the soroban, catering to different skill levels. It's important to note that this app is designed for practice purposes only. If you develop an interest in the abacus, it is recommended to practice using a physical soroban.

The こんたのそろばん練習アプリ is available for free on the Android platform and falls under the Utilities & Tools category. It is developed by ソフト開発室.