Use an with customizable size, position, and color settings. Perform calculations up to 15 digits. Challenge addition, subtraction, multiplication, and division problems. Adjust bead sounds and screen orientation for horizontal use.
by Hirokazu Komatsu★ 4.560 ratingsEducationFreeData updated 2026-09-28
Teaches multiplication and division through interactive gameplay. Includes seven strategies for solving problems. Allows users to track progress and practice regularly without using worksheets or flashcards.
The app displays addition and multiplication tables as colorful quilts. It assigns a specific color to each positive whole number, making it easier to discover patterns in mod arithmetic.