Voice Math: 10 Questions

Voice-answer math: times tables, add & subtract in a 10-question time attack. Zero ads, fully offline. Master Mode adds tables 4–12, division & a parent report.

Say the answer out loud — that's the whole drill. “Koede Keisan” is a voice-answer math app for kids. No pencil, no paper. In a 5–7 minute, 10-question time attack, children practice times tables, addition and subtraction with great rhythm.

■ A new way to practice math — by voice Read the problem on screen and just say the answer. On-device speech recognition listens and a gentle, forgiving check captures correct answers. If it can't hear clearly, switch instantly to a calculator-style tap pad.

■ Free • Times tables 1–3 • Addition (including carrying) • Subtraction (including borrowing) • Time attack and best records Plenty for memorizing the times tables and practicing carry/borrow.

■ Master Mode (one-time purchase, no subscription) For families who want more, a single purchase unlocks: • Times tables 4–12 and division • Per-table “Progress” (mastery shown as stars) • Automatic weak-spot detection from mistakes and answer time, and adaptive practice that steers the next questions toward weak spots • Parent report (days played, day streak, accuracy per table, recent trend) • Sibling profiles (separate records per child) Purchasing is only inside the parent PIN gate, so kids can't buy by accident. It's a one-time purchase (not a subscription) and supports Family Sharing.

■ For parents — designed for peace of mind • Zero ads (no banners, no full-screen) • Works fully offline; learning data and audio are never sent (processed on device) • Nothing is stored on a server • The purchase flow is hidden from kids, inside the parent PIN A kind, encouraging tone — a healthy learning experience you can confidently hand to your child.

■ Great for • Grades 2–3 (memorizing/cementing times tables, carry & borrow) • Grade 1 addition and subtraction • Early grade 4 division (Master Mode)

Saying it out loud makes it stick. Five minutes a day builds fast, accurate calculation.