Apps by Katsuhiko Yao
Multiply Pairs – Mental Math app icon

Education

Multiply Pairs – Mental Math

Katsuhiko Yao

Free download In-app purchases unconfirmed
Open on Apple

About this app

Created by a Math Teacher QuickMath Series A math training app designed to strengthen your calculation skills and logical thinking in a short time. A math × brain training series for improving number sense. Find pairs of numbers and reach the target number! In this app, you can practice multiplication. Search for pairs of numbers that produce the target value. While playing, you can improve: • multiplication • Mental math skills • Calculation speed Suitable for • Advanced elementary school students • Middle school math practice QuickMath Series • SumX – number pair puzzle • SumXMinus – negative number training • Common Divisor – divisor brain training • Exponent – power calculation challenge Train your math brain every day. Perfect for students, teachers, and anyone who wants to train their math brain.

Latest release

What’s New

Version 2.0.3 Jun 23, 2026

Improved the Result View layout on certain tablet devices, including the iPad Air 11-inch. * Fixed layout issues on the result screen * Improved visibility of scores and buttons * Enhanced overall user experience

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Aug 12, 2026 · 0 ratings Aug 12, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free
Price history
Current Free
Free Aug 12, 2026 · Free Aug 12, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Aug 12, 2026 · 5:28 PM Free

Screenshots

Multiply Pairs – Mental Math iPhone screenshotMultiply Pairs – Mental Math iPhone screenshotMultiply Pairs – Mental Math iPhone screenshotMultiply Pairs – Mental Math iPhone screenshotMultiply Pairs – Mental Math iPhone screenshot