MathGrid 100 vs Math Grid Calculation Training
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.
Math Grid Calculation Training
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Math Grid Calculation Training is a compact mental math training app inspired by the classic 100-cell calculation method. Compared to traditional 100-cell math exercises, this mini-sized version is quicker and easier to play, making it perfect for short study sessions and spare moments throughout the day. “Regular hundred cell calculation takes too long…” “I want quick brain training and math practice…” Math Grid Calculation Training is the perfect solution for anyone looking for a fast and enjoyable arithmetic training experience. Practice addition, subtraction, multiplication, and other math problems while improving your: * mental arithmetic skills * calculation speed * concentration * accuracy It is recommended for: * elementary school math practice * daily arithmetic training * brain training for adults * quick mental math exercises 【Features】 * Mini-sized grid math training * Quick and easy mental arithmetic practice * Perfect for short breaks and spare time * Improve both speed and accuracy * Fun for both kids and adults * Simple and easy-to-use controls Whether you enjoy math practice, brain training, or daily calculation exercises, Math Grid Calculation Training makes it easy to build a consistent learning habit. Challenge yourself with quick and compact grid math puzzles anytime, anywhere! 【Benefits of Grid Math Training】 Grid math training is a learning method that improves mental arithmetic and calculation speed by repeatedly solving math problems in a grid format. This style of training is also widely known through Professor Kageyama’s arithmetic exercises. Although the rules are simple, regular practice can provide many benefits: * Improve mental math ability Repeated calculation practice helps you solve arithmetic problems faster in your head. * Increase calculation speed Solving many problems within a limited time naturally improves speed. * Strengthen concentration Filling in the grid continuously helps improve focus and attention. * Improve accuracy You can train yourself to calculate quickly while reducing mistakes. * Build study habits Short practice sessions make it easier to continue daily learning and brain training. * Brain training and cognitive exercise Grid math is also popular among adults as a form of brain training and mental exercise. Grid math training is useful not only for elementary school students learning arithmetic, but also for: * middle school students * high school students * adults who want to improve mental math skills By practicing a little every day, you can gradually improve both speed and accuracy while gaining confidence in calculation. Small size of 100-cell calculation: math practice exercise to improve your brain!
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Verdict
MathGrid 100 and Math Grid Calculation Training are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
MathGrid 100 ships an update every 3 weeks, Math Grid Calculation Training every 2 months. The most recent releases landed on September 19, 2026 and September 12, 2026 respectively.
| Parameter | MathGrid 100 | Math Grid Calculation Training |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 40 MB | 95 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroyuki Ishikawa | Masaki Kanno |
In-app purchases
MathGrid 100
No in-app purchases
Math Grid Calculation Training
No in-app purchases
Questions
Is MathGrid 100 free?
Is Math Grid Calculation Training free?
Do MathGrid 100 or Math Grid Calculation Training have ads?
Which is updated more often, MathGrid 100 or Math Grid Calculation Training?
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