GrandMath Math Puzzles

OBI開発室

About this game

GrandMath Math Puzzles is a simple arithmetic puzzle app made for light daily practice.
It is designed for seniors who enjoy brain training, children reviewing basic math, and families who want a calm number puzzle app that is easy to use.
The app uses large text, simple controls, and a clean layout so that people of different ages can enjoy short math sessions without feeling rushed.
Ads are kept modest and appear only after several stages, so they are less likely to interrupt the puzzle experience.
■ Cross Math
Fill the empty squares so that the vertical and horizontal equations match.
Practice addition, subtraction, multiplication, and division while solving a compact arithmetic puzzle.
■ Sudoku
Enjoy a classic number puzzle with multiple difficulty levels.
Start easy and move up as you get more comfortable.
■ Number Pyramid
Use the numbers below to work out the numbers above.
This mode helps you practice the relationship between numbers through simple calculation.
■ 100-Bead Abacus
Move colorful beads and build a stronger sense of numbers.
This mode is useful for visualizing counting and basic arithmetic.
GrandMath is recommended for:
・Daily math puzzle practice
・Brain training and light mental exercise
・Kids reviewing arithmetic
・Practicing addition, subtraction, multiplication, and division
・People looking for large text and easy controls
・Families who want a clean math app with modest ads
・Anyone who enjoys number puzzles at a relaxed pace
GrandMath aims to be simple, friendly, and easy to continue.
Open the app for a few minutes a day and enjoy moving your mind with numbers.

What’s new

GrandMath 1.2.1
・Updated the color palette and home screen for better readability.
・Improved the 100-bead abacus with a brighter, more dimensional design.
・Renamed “Answer” to “Hint” and refined the hint experience.
・Added helpful first-time tips across modes.
・Updated the app icon, splash screen, and store graphics.