# Handwriting Grid Math Training — Brain Training with Grid Math!

> Brain Training with Grid Math! (iPhone/iPad app by Tatsuya Yamaguchi.)

- Source: https://appshunter.io/ios/app/handwriting-grid-math-training/id6498594589 (this page in markdown: same URL + `.md`)
- Developer: [Tatsuya Yamaguchi](https://appshunter.io/developer/447542345)
- Category: Medical
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.2 · 1 MB
- Languages: English, Japanese
- Released: 2024-04-19
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/handwriting-grid-math-training/id6498594589/reviews.md

## What is Handwriting Grid Math Training?

This is a grid math training app with handwriting input. Please use it for mental exercise.

How to use:
You can choose addition, subtraction, or multiplication.
Enter the answer by handwriting, and if it’s correct, it will automatically move to the next grid.

In the settings tab, you can set the grid size and whether you are right-handed or left-handed.
It’s easier to write if you use an Apple Pencil on an iPad.

The app is free to use for the first 3 days after installation. After the free trial period ends, the app will be locked. However, you can continue to use it by unlocking it with a purchase.

Requires iOS 17.2 or later.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Access Unlock | $1.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2024-04-19

No release notes.

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## More apps by Tatsuya Yamaguchi

- [Baby Growth Chart](https://appshunter.io/ios/app/baby-growth-chart/id447542342)
- [Baby Growth Chart Lite](https://appshunter.io/ios/app/baby-growth-chart-lite/id482992377)
- [Play the Clock](https://appshunter.io/ios/app/play-the-clock/id540972976)
- [Handwriting Math Training](https://appshunter.io/ios/app/handwriting-math-training/id883864844)
- [Handwriting Math Training for Kids](https://appshunter.io/ios/app/handwriting-math-training-for-kids/id938034323)
- [FLEEING ROBOT / Construction Set](https://appshunter.io/ios/app/fleeing-robot-construction-set/id1119110117)

All apps by Tatsuya Yamaguchi: https://appshunter.io/developer/447542345

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-16.*