MathGrid 100 vs 100 Squares

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.

100 Squares brings addition, subtraction, multiplication and division together in a single app - the classic drill for building elementary calculation skills. FEATURES - Pick one of the four operations and race the clock over 100 problems - A separate national ranking for each operation, so you can compete with players nationwide - The cursor moves to the next square as you answer, so you keep a steady rhythm - Remove ads with a one-time purchase (250 yen) for distraction-free practice - Available in English, Chinese (Simplified), Korean and Spanish THE FOUR OPERATIONS - Addition - 100 problems adding 0 to 9 - Subtraction - 100 problems that never go below zero - Multiplication - 100 problems covering the times tables - Division - 100 problems that always divide evenly RECOMMENDED FOR - Parents who want to sharpen their child's calculation speed - Building a daily study habit - Kids who want to get good at arithmetic in a fun, game-like way Simple to use, anytime and anywhere. Give it a try together as a family!