MathGrid 100
AI-graded math drill scanner
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Look back at each day's worksheet photo right from your grading history. Keep kids motivated with streaks, levels, and badges as they build mental math fluency.
MathGrid 100 — Photo-graded math drills for daily mental math practice.
Known in Japan as "Hyakumasu Keisan" (百マス計算 / 100-square calculation), this classic drill is a proven method for building mental math fluency, recommended by Japanese educators such as Hideo Kageyama. MathGrid 100 brings this method to your iPhone with AI-powered photo grading: just snap a picture of the completed worksheet and get an instant score.
【Features】
* Camera-based instant grading — no typing required
* Supports addition and multiplication
* 9×9 (multiplication) and 10×10 grids
* Review and manually edit each cell if needed
* Saves up to 20 sessions in history
* Points, levels, and badges to keep kids motivated
* Daily streak tracking
* Up to 4 separate child profiles with individual progress
【Great for】
* Parents tired of manually grading drill sheets
* Tracking your child's daily practice
* Gamifying repetitive practice to keep kids engaged
* Supplementing Kumon, abacus class, or other math curricula
※ Internet connection required (handwriting recognition runs in the cloud).
※ This app shows a persistent banner ad and an interstitial ad after every few gradings.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
[View your worksheet photos in History]
Tap any past grading to see a large view of the worksheet photo you took. It's now easy to look back at which sheet was graded.
[Also]
- Minor bug fixes and improvements
Thank you for using MathGrid 100.
The developer, Hiroyuki Ishikawa, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- User Content
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Hiroyuki Ishikawa
- Size
- 42.5 MB
- Category
- Education
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © (c) 2026 megahoso.net