Math Gallery: Visual Math
36 math stories in Japanese
Free · Designed for iPad. Not verified for macOS.
Explore 36 Japanese math stories with interactive diagrams. New topics: balls and boxes, one-stroke paths, and average speed over a round trip.
Explore mathematical ideas through Japanese stories and interactive diagrams.
LANGUAGE
The app interface, stories and explanations are in Japanese. This English page describes the Japanese-language app.
36 STORIES
Explore the Pythagorean theorem, circle area, the Euclidean algorithm, pi, quadratic functions, derivatives, the Monty Hall problem, the birthday paradox, prime numbers, Fibonacci numbers, similarity, inscribed angles, the pigeonhole principle, one-stroke paths and average speed. Browse by school level or subject.
PREDICT, EXPERIMENT, UNDERSTAND
Choose a prediction, move a diagram, read the reasoning, explore a more advanced idea, then try a practice question. Each story has five sections you can follow at your own pace. Your chosen prediction appears as you continue, so you can compare it with the explanation.
STEP-BY-STEP DIAGRAMS
Practice questions include explanations with diagrams that change as you move through the solution. You can open an explanation whenever you need it. Furigana helps you read unfamiliar Japanese mathematical terms.
FOR IPHONE AND IPAD
Learning content works offline. No account, ads or in-app purchases. Recently opened stories are saved on your device.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Added support for iPhone Duo.
The developer, Naoki Chiba, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Naoki Chiba
- Size
- 12.1 MB
- Category
- Education
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Naoki Chiba