MathGrid 100 vs フラッシュ暗算+
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.
フラッシュ暗算+
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フラッシュ暗算+は、画面に一瞬だけ表示される数字を素早く計算する脳トレアプリです。
Screenshots
Verdict
The clearest difference is ads: フラッシュ暗算+ 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 | フラッシュ暗算+ |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | — |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 40 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroyuki Ishikawa | otsuki hayato |
In-app purchases
MathGrid 100
No in-app purchases
フラッシュ暗算+
No in-app purchases
Questions
Is MathGrid 100 free?
Is フラッシュ暗算+ free?
Do MathGrid 100 or フラッシュ暗算+ have ads?
Other comparisons
