Know Abacus is an educational app designed to help children learn about the abacus, numbers, counting, addition, and subtraction. Developed by Kittipong Mungnirun, this app aims to tap into the unexploited potential of children's brains and unleash their mathematical capabilities.

This app is suitable for children aged 5 and up who already have knowledge of numbers and some basic addition and subtraction skills. For younger children, it is recommended to use the KnowNumber app.

Know Abacus offers a range of features to enhance learning, including counting with an abacus, addition and subtraction with 1 or 2 digits, multiplication and division with 1 or 2 digits, mental math exercises, review lessons, and unlimited random lessons.

Users can choose between a black/white or colorful abacus and can customize their learning experience with different learning modes. The app supports both two-touch and multi-touch abacus interactions, making it accessible for users with different preferences. Additionally, left-handed mode is available for left-handed users.

Know Abacus also offers localization in multiple languages, including English, French, Spanish, Thai, Turkish, Arabic, Portuguese, and Russian.

With its comprehensive range of features and user-friendly interface, Know Abacus provides an engaging platform for children to develop their mathematical skills in a fun and interactive way.