# Master99 — For high-speed multiplication

> Multiplication trainer for improving speed and brain activity. (iPhone/iPad app by Kou Research Co., Ltd.)

- Source: https://appshunter.io/ios/app/master99/id1451258564 (this page in markdown: same URL + `.md`)
- Developer: [Kou Research Co., Ltd](https://appshunter.io/developer/1451258563)
- Category: Education
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 11.0 · 76 MB
- Languages: English
- Released: 2019-02-13
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/master99/id1451258564/reviews.md

## What is Master99?

How fast can you do the multiplication?

Master99 is the best trainer for multiplication and the best tool to accelerate brain activity.

- You can train multiplication table step by step, from x2 to x19.
- Improve your multiplication speed and compete with people all over the world!

## Key features

- Step-by-step multiplication training
- Train tables from 2x to 19x
- Improve multiplication speed
- Global leaderboards for competition
- Accelerate brain activity

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove ads. | $4.99 | one-time |



## Frequently asked questions about Master99

### What is the learning methodology of Master99?

Master99 uses a step-by-step training approach for multiplication tables, allowing users to progress from 2x up to 19x. This structured method helps build a strong foundation in multiplication.

### How does Master99 track progress?

While specific progress tracking metrics are not detailed, the app focuses on improving multiplication speed and allows users to compete globally. This suggests progress is measured by performance in timed challenges and leaderboard rankings.

### Does Master99 offer certifications?

Master99 does not offer formal certifications. Its primary focus is on skill development and global competition to enhance multiplication abilities and brain activity.

### What is the age rating for Master99?

Master99 has an age rating of 4+, making it suitable for young learners and anyone looking to practice multiplication.

### On which devices can I use Master99?

Master99 is available on iPhone, iPad, and iPod devices, offering broad compatibility for Apple users.

### How often is Master99 updated?

The latest version, 2.0.6, was released on April 21, 2021. While update frequency isn't explicitly stated, this indicates recent development activity.

### What do users like about Master99?

Users appreciate its effectiveness as a multiplication trainer and its ability to accelerate brain activity. The global competition feature is also a strong point for user engagement.

### Does Master99 have ads?

The provided data does not specify if Master99 contains advertisements. However, as it is free and does not list in-app purchases, it may be ad-supported.

## Version history (last 1 release)

### 2.0.6 — 2021-04-21

- In app purchase bug fix

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## More apps by Kou Research Co., Ltd

- [DualZero](https://appshunter.io/ios/app/dualzero/id1451262579)
- [Smashing Hunter : 3D Ball game](https://appshunter.io/ios/app/smashing-hunter-3d-ball-game/id1463357975)

All apps by Kou Research Co., Ltd: https://appshunter.io/developer/1451258563

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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 2026-06-10.*