# Digit Matrix : Math Puzzles — Training computation and logic

> Math puzzles for calculation, logic, and mathematical thinking. (iPhone/iPad app by 振华 许.)

- Source: https://appshunter.io/ios/app/digit-matrix-math-puzzles/id1450134270 (this page in markdown: same URL + `.md`)
- Developer: [振华 许](https://appshunter.io/developer/1437340417)
- Category: Education
- Price: Free with in-app purchases
- Rating: 3.60/5 from 5 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 11 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2019-01-24
- Data updated: 2026-06-05
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/digit-matrix-math-puzzles/id1450134270/reviews.md

## What is Digit Matrix?

Digit Matrix is a collection of interesting mathematics exercises. This APP can improve the ability of calculation and logical reasoning, and cultivate mathematical thinking. It includes topics ranging from simple to very difficult. It is a good helper in learning mathematics or training the brain. 

Feature:
Computing and Logical Reasoning            
Fifteen types. Infinite exercises          
Different Difficulties            
Easy to get started
Five themes            

Contents:
1.  Arithmetic Square
Place the numbers from 1 to 9 into the cells (a different single number in each cell) so that the indicated equations are correct. Evaluate from left-to-right and top-to-bottom (ignore the usual precedence of the operators).
2.  Chains
Enter the numbers from 1 to X in the squares, once each, so that the given equations are correct. (Each equation begins at one square and ends at the next square; X is the total number of squares.)
3.  SUMS
Place a number from 1 to N into each cell. (N is the total number of cells in the grid.) Every cell must contain a different number. The numbers outside the grid, when given, indicate the sum of the numbers in the corresponding row, column, or diagonal.
4. Coins
Place one coin into each cell such that the sum of the coins in each row and column matches the number to the left and the top. the same denomination may be used multiple times in each row or column.
5.  Hundred
A square grid whose cells are to be filled by some digits. The task is to fill additional digits in required cells such that the sum of numbers in each row and each column equals to 100.
6.  Antimagic Square
Place numbers from 1 to 2*N (N is the number of cells per side) into the cells so that there are exactly two numbers in each row, column and main diagonal. The sums of the two numbers are shown around the grid.
7.  Products
Place numbers from 1 to 2*N (N is the number of cells per side) into some cells so that each number is in exactly one cell, and no cell has more than one number. Each row and each column must contain exactly two numbers. Numbers outside the grid are the product of the two numbers in that row or column.
8.  Products (Off-by-One)
Place numbers from 1 to 2*N (N is the number of cells per side) into some cells so that each number is in exactly one cell, and no cell has more than one number. Each row and each column must contain exactly two numbers. Numbers outside the grid are 1 more or 1 less than the product of the two numbers in that row or column.
9.  Addends
Select Specified quantity of numbers from a given number set. Each number can not selected more than once. The sum of selected numbers must same as the given value.
10.  Equality
Delete Specified quantity of squares so that what remains is a correct equation. Use standard order of precedence (multiplication and division before addition and subtraction).
11.  Alphametic Square
Each letter represents a different digit.  Figure out which letter corresponds to which digit so that all equations are true.  Multi-digit numbers cannot start with the digit 0.
12.  Matches Arithmetic
Remove, Add or Move one to three matches so that the matches express a correct arithmetic equality. Click the match to remove it. Click the empty position to add the match.
13.  Digit Twins
Two numbers are connected by up to three line segments, and the two numbers are divided by their greatest common divisor at the same time. If the quotient is 1, the number will be eliminated. All numbers on the board need to be eliminated.
14.  Divisor and multiple
Numbers are added to 2 queues alternately. 2 groups of numbers are divided by their greatest common divisor in turn.  Eliminate the number If the quotient is 1.
15.  Numeric Factor Path
On the board, if any two adjacent numbers have a common divisor greater than 1, they can be connected, and only one line can be connected between the two adjacent numbers. The final goal is to connect all the numbers into a non-intersecting path.

## Key features

- Calculation and logical reasoning training
- Fifteen types of puzzles
- Infinite exercises
- Multiple difficulty levels
- Five visual themes
- Covers arithmetic, sums, products, and more

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| All Contents | $3.99 | one-time |
| Cross Computing | $0.99 | one-time |
| Matches | $0.99 | one-time |
| Addition | $0.99 | one-time |
| Blank Cell | $0.99 | one-time |
| Digit Twins, Divisor&Multiple | $0.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/digit-matrix-math-puzzles/id1450134270/reviews.md

### 5/5 — Well made and not easy!

*2020-08-16*

The app is well structured and easy to get started on, there are many different math exercises and I actually learned a lot of new types. It’s not always easy, a lot of thinking involved. Everything works great, the app is well made.

**Developer response:** Thank you for your support. We will do well.

## Frequently asked questions about Digit Matrix

### What is Digit Matrix?

Digit Matrix is a collection of mathematics exercises designed to improve calculation and logical reasoning abilities. It offers various puzzle types and difficulty levels to cultivate mathematical thinking.

### What types of math puzzles are included in Digit Matrix?

Digit Matrix includes puzzles such as Arithmetic Square, Chains, SUMS, Coins, Hundred, Antimagic Square, Products, Addends, and Equality, among others.

### Is Digit Matrix suitable for all ages?

Digit Matrix has an age rating of 4+, making it suitable for a wide range of users looking to train their brains and improve math skills. It offers a progression from simple to very difficult challenges.

### Does Digit Matrix have ads?

Yes, Digit Matrix contains advertisements. This allows the app to be offered for free while still providing a comprehensive puzzle experience.

### What devices support Digit Matrix?

Digit Matrix is supported on iPhones, iPads, and iPods, making it accessible to a broad audience of Apple device users.

### How often is Digit Matrix updated?

The latest version of Digit Matrix is 4.0, and it was last updated on December 4, 2025. This indicates a commitment to ongoing development and improvements.

### Can I play Digit Matrix offline?

The provided data does not specify offline play capabilities. However, many puzzle-based apps offer offline functionality for uninterrupted gameplay.

### What is the user rating for Digit Matrix?

Digit Matrix has a rating of 3.6 stars based on 5 ratings. This suggests a generally positive but mixed user reception.

## Version history (last 5 releases)

### 4.0 — 2025-12-04

Update for new system.

### 3.1 — 2023-02-01

Add New: Numeric Factor Path.
There are 15 mathematical puzzles.

### 3.0 — 2023-01-30

Add New: Numeric Factor Path.
There are 15 mathematical puzzles.

### 2.8.5 — 2022-04-30

Known bug fixed.

### 2.8 — 2022-01-07

Fix minor bugs.

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All apps by 振华 许: https://appshunter.io/developer/1437340417

## Related topics

[matrix math](https://appshunter.io/ios/topics/matrix-math)

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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 2026-06-05.*