# Voice Math: 10 Questions — Math answers by voice

> Math answers by voice (iPhone/iPad app by Hideaki Yasukawa.)

- Source: https://appshunter.io/ios/app/voice-math-10-questions/id6757856231 (this page in markdown: same URL + `.md`)
- Developer: [Hideaki Yasukawa](https://appshunter.io/developer/1815733536)
- Category: Education
- Price: Free with in-app purchases (on sale, was $1.99)
- Age rating: 4+
- Requires: iOS 15.1 · 20 MB
- Languages: American English
- Released: 2026-01-18
- Data updated: 2026-08-05
- User reviews in markdown: https://appshunter.io/ios/app/voice-math-10-questions/id6757856231/reviews.md

## What is Voice Math?

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.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Master Mode | $1.99 | one-time |



## Version history (last 4 releases)

### 1.0.3 — 2026-08-01

Stability improvements and minor polish.
Zero ads, fully offline and no data sending — same as always.

Five minutes a day is all it takes: practice times tables, addition and subtraction with the 10-question voice challenge.

### 1.0.2 — 2026-06-09

Added Master Mode (one-time purchase, no subscription).
• Unlocks times tables 4–12 and division
• Per-table progress (stars) and adaptive practice that finds weak spots and steers questions toward them
• Parent report (days played, streak, accuracy per table, recent trend)
• Sibling profiles
We also improved on-screen clarity and usability. Zero ads, fully offline and no data sending — same as always.

### 1.0.1 — 2026-01-21

Improved voice recognition stability.
Minor fixes and performance improvements.

### 1.0.0 — 2026-01-18

No release notes.

## More apps by Hideaki Yasukawa

- [AirportStamp – Japan Airports](https://appshunter.io/ios/app/airportstamp-japan-airports/id6758456116)
- [こえで星座](https://appshunter.io/ios/app/id6776843856)

All apps by Hideaki Yasukawa: https://appshunter.io/developer/1815733536

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-05.*