Apps by Kyuseok Lee
Master Addition app icon

Education

Master Addition

Kyuseok Lee

Free download In-app purchases unconfirmed
Open on Apple

About this app

Find the best addition king in the world! In the first to tenth round, you'll compete for who can solve the addition quiz faster. 1 to 4 rounds of single-digit addition problems, From four to eight rounds, two-digit addition problems, From the 9th to the 10th round, three-digit addition problems will be released. Who can become the world's best addition king with the shortest record? Download now and challenge the King of Addition! It is perfect not only for simple competition games, but also for your child's educational games.

Latest release

What’s New

Version 1.2 Mar 26, 2020

Performance improvement

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 27, 2026 · 0 ratings Aug 27, 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 27, 2026 · Free Aug 27, 2026

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

  1. First observed Aug 27, 2026 · 9:20 AM Free

Screenshots

Master Addition iPhone screenshotMaster Addition iPhone screenshotMaster Addition iPhone screenshot Master Addition iPad screenshotMaster Addition iPad screenshotMaster Addition iPad screenshot