GridCalculation
Katsuhiko Yao Education iPhoneiPadiPod touch
GridCalculation is a free Education app for iPhone and iPad by Katsuhiko Yao. Requires iOS 16.6. Updated August 6, 2026.
- Price
- Free
- on the App Store
- Size
- 16 MB
- Age 4+
- Updated
- Aug 6
- 2026 · v2.2.0
Screenshots
About GridCalculation
GridCalculation is a math learning app that uses grids to help students discover patterns and relationships in numbers. Practice addition, subtraction, multiplication, division, decimals, negative numbers, and scaling relationships between divisors and quotients through visual learning. Features: • Grid-based math practice • Addition, subtraction, multiplication, and division • Decimal calculations • Negative number calculations • Quotient and remainder exercises • Scaling Division mode • Multiple difficulty levels • Simple and focused learning experience Designed for elementary and middle school students to build strong calculation skills and mathematical understanding.
What’s new
Version 2.2.0 · Updated August 6, 2026
Added a confirmation before checking answers. * A confirmation dialog is now displayed if there are unanswered cells. * This helps prevent accidentally checking answers before finishing your work. * Improved overall usability and user experience. 未入力時の確認機能を追加しました！ ・未入力のセルがある場合、答え合わせを行う前に確認画面を表示するよう改善しました。 ・誤って答え合わせを押してしまう操作を防ぎ、安心して学習できるようになりました。 ・細かな操作性を改善しました。
App privacy
The developer, Katsuhiko Yao, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data
- Diagnostics: Crash Data, Performance Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data
- Diagnostics: Crash Data, Performance Data
Used for: Third-Party Advertising
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| GridCalculation | – | Free | August 6, 2026 | |
| Large Math Drill - Mental Math | – | Free | Jul 23, 2025 | Compare |
| 正の数・負の数トランプゲーム | – | Free | Aug 9, 2024 | Compare |
| ビノバ 中学 地理 | – | Free | Mar 26, 2024 | Compare |
| 小2手書き漢字 - スペースバスター | 4.7 / 5 (3) | Free | Apr 26, 2026 | Compare |
| 小学3年生 漢字ゲーム 漢検8級 - スペースバスター | – | Free | Apr 26, 2026 | Compare |
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