# Ninja Mathster — Master Multiplication

> Gamified multiplication practice app with belt ranking system. (iPhone/iPad app by The Mobile App Solution LLC.)

- Source: https://appshunter.io/ios/app/ninja-mathster/id1432667953 (this page in markdown: same URL + `.md`)
- Developer: [The Mobile App Solution LLC](https://appshunter.io/developer/302586269)
- Category: Education, Games
- Price: $1.99 with in-app purchases
- Rating: 5.00/5 from 5 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 7 MB
- Languages: American English
- Released: 2018-10-22
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/ninja-mathster/id1432667953/reviews.md

## What is Ninja Mathster?

Black Belt = an “A” on the multiplication timed test.

One Multiplication assignment seven days in a row = a Black Belt.  Avoid skipping a day!

Ninja Mathster Red Belt is the highest rank in the Ninja Mathster app.  Complete an assignment in less than 5 minutes to earn a Red Belt.  Black Belts should complete one assignment every hour until you earn a Red belt.  It normally takes 3 to 5 assignments for a Black Belt to earn a Red Belt.

Ninja Mathster builds a list of problems from 1 X 1 through 12 X 12 and randomly displays a problem.  If the student inputs the correct answer in less than eight seconds, they don't have to repeat the problem.  However, if it takes too long the app puts the problem back on the list and they will have to try again.

Tap + in the top right and select the type of problem you want to practice.  It will create a new row.  Tap the row to begin.  

* Go as fast as you can.  
* This is practice, not a test. 
* If you don’t know guess.  
* If you can’t guess, try to reason out the answer.
* Tap help to see if there is a tip for the problem on the screen.
* Write the problem on a piece of paper and use a calculator if nothing above works.
    * Writing the problem and answer helps you remember it the next time you see it.
* Answer the questions until you complete the assignment.

## Key features

- Multiplication timed tests
- Belt ranking system (Red Belt, Black Belt)
- Customizable problem sets (1x1 to 12x12)
- Timed problem solving
- Hint system for difficult problems
- Progress tracking through assignments

## Pricing and in-app purchases

Base price: $1.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Small Tip | $1.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Large Tip | $9.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/ninja-mathster/id1432667953/reviews.md

### 5/5 — A Necessity

*2019-03-05*

Brilliantly composed app that not only teaches fundamentals, but also strengthens them while remaining easy to navigate and operate. It should be a necessity in all schools. Learn or re-learn in a flash!

### 5/5 — Good review of base skills

*2019-03-04, version 2.0.2*

Keeps the mind sharp with timed play

## Frequently asked questions about Ninja Mathster

### What is the learning methodology of Ninja Mathster?

Ninja Mathster uses a gamified approach to teach multiplication. Students earn belts by completing assignments quickly and accurately, encouraging consistent daily practice. The app focuses on timed problem-solving and provides hints to aid learning.

### How does Ninja Mathster track progress?

Progress is tracked through assignment completion and the earning of different belt ranks. Achieving a Black Belt signifies consistent practice, and a Red Belt indicates mastery within a 5-minute assignment time.

### Does Ninja Mathster offer certifications?

While Ninja Mathster awards virtual belts (Black Belt and Red Belt) for mastering multiplication skills, it does not offer formal academic certifications.

### What devices does Ninja Mathster support?

Ninja Mathster is available on Mac, iPhone, and iPad devices, allowing for practice across multiple Apple platforms.

### What is the age rating for Ninja Mathster?

Ninja Mathster has an age rating of 4+, making it suitable for young children and elementary school students learning multiplication.

### How often is Ninja Mathster updated?

The app was last updated on November 15, 2022, with version 4.1. Information on the frequency of future updates is not provided.

### Does Ninja Mathster have ads?

No, Ninja Mathster is ad-free, providing an uninterrupted learning experience for users.

### What are the pricing details for Ninja Mathster?

Ninja Mathster is a paid application, available for a one-time purchase of $1.99.

## Version history (last 5 releases)

### 4.1 — 2022-11-15

Improved charts to include all problems, repeated problems and tough problems.

### 4.0.2 — 2022-01-10

Red Belt for true Ninja Mathsters!

### 4.0.1 — 2021-12-12

Updated graph.

### 4 — 2020-09-08

This version keeps the Repeats table and adds a graph of every math problem in the assignment.  The graph displays completed problems sorted by completion date with the number of seconds it took to complete.

It also displays the UCL (Upper Control Limit).  The upper control limit takes into consideration how fast the student can type.  The Repeats table shows what problems the student needs to study and the timeline can identify things like distractions.

### 3.1.3 — 2020-08-26

Bug fix in report.  Minor cosmetic updates.

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## More apps by The Mobile App Solution LLC

- [Math Katas](https://appshunter.io/ios/app/math-katas/id6757363915)
- [Bloom Garden: Cascade](https://appshunter.io/ios/app/bloom-garden-cascade/id6759075942)

All apps by The Mobile App Solution LLC: https://appshunter.io/developer/302586269

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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.*