MathGrid 100 vs Divio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MathGrid 100
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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.
Divio
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Divio は、筆算のわり算を一歩ずつ練習するための子ども向けアプリです。 筆算のレイアウトを画面に表示し、現在入力する手順をハイライトしながら、順番どおりに答えを入力していきます。多桁のわり算を、流れを確認しながら練習したい子どもに向けて設計しています。 主な機能: - 筆算のわり算を手順ごとにガイド - 商、かけ算、引き算、下ろす手順の入力 - 間違えた問題の復習 - 子どもごとのローカルプロフィール - 全問正解した最も高いステージに基づくレベル表示 - 任意のローカルリマインダー - 日本語と英語の表示切り替え Divio はアカウント登録なしで使えます。初回リリースでは、学習記録とプロフィールデータは端末内に保存されます。
Screenshots
Verdict
The clearest difference is ads: Divio at none against MathGrid 100's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | MathGrid 100 | Divio |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | — |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 40 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroyuki Ishikawa | Yu Takahashi |
In-app purchases
MathGrid 100
No in-app purchases
Divio
No in-app purchases









