Apps by byeonghyun So
Mental Math - basics of math app icon

Education

Mental Math - basics of math

byeonghyun So

Free download 4.50 · 1 storefront · 4 ratings In-app purchases unconfirmed
Open on Apple

About this app

* The importance of mental calculation - It is difficult to calculate faster and exactly. - Mental calculation is the best way to calculate faster and exactly. - In this way, you can develop your overall ability of math. - Also, it is good for brain-training * Features 1. Many math teachers adopt this way for their teaching! - Anyone can learn easily. - Practice 10 minutes everyday. - Fix the wrong calculate habits. - Good for brain-training. - You can learn addition, subtraction, multiplication, and division. 2. Anyone, Anytime, Anywhere! - For all ages. - Do not need internet connection(wi-fi). - All smartphones and pads available. 3. Have fun with characterful designs! - Fun stories like a game. - You can collect monster friends when learning. - Challenge the King of mental calculation. 4. Convenient checkup! - Mark the answers in real time. - Check the overall learning process. - Find your weaknesses. * Recommend 'MathMon: Mental Math' to these people - People who calculate slow and make many mistakes. - People who feel bored with learning calculation. - Anyone who wants fun brain-training.

Latest release

What’s New

Version 1.5.0 Dec 13, 2018

- Improve performance and fix billing errors.

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
4 ratings
4 Aug 26, 2026 · 4 ratings Aug 26, 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 26, 2026 · Free Aug 26, 2026

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

  1. First observed Aug 26, 2026 · 7:07 AM Free

Screenshots

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