# Digit Matrix vs K.O. Nonogram

The clearest difference is rating: K.O. Nonogram at 5.0 against Digit Matrix's 3.6. K.O. Nonogram also leads on in-app purchases (none vs 6) and update cadence (every 5 days vs every 3 weeks). Digit Matrix's advantage is review sentiment (100% vs 85%). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Digit Matrix sells 6 one-off in-app purchases. K.O. Nonogram asks for nothing beyond the download.

K.O. Nonogram holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews complicate that: 100% of Digit Matrix's written reviews are positive against 85% of K.O. Nonogram's, so the app with the better star average is not the one people write more warmly about.

Digit Matrix ships an update every 3 weeks, K.O. Nonogram every 5 days. The most recent releases landed on September 16, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Digit Matrix | K.O. Nonogram |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (5 ratings)](https://appshunter.io/ios/app/digit-matrix-math-puzzles/id1450134270/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ko-nonogram/id1626831214/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | **100.0% of reviews** | 85.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 11 MB | 42 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [振华 许](https://appshunter.io/developer/1437340417) | [又瑞 韦](https://appshunter.io/developer/1625836878) |

## What reviewers say

### Digit Matrix

[App page](https://appshunter.io/ios/app/digit-matrix-math-puzzles/id1450134270)

Engage in a variety of mathematical puzzles designed to enhance calculation skills and logical reasoning. Explore numerous challenges from simple to complex, cultivating a stronger mathematical mindset.

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

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 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 |
| All Contents | $3.99 | one-time |


### K.O. Nonogram

[App page](https://appshunter.io/ios/app/ko-nonogram/id1626831214)

Instantly solve Nonogram puzzles with step-by-step guidance. Supports grids from 5x5 to 50x50. Explore a vast online store for printable puzzles.

**Highlights:** Instant puzzle solving, Step-by-step guidance, Supports 5-50 grid sizes, Online puzzle store, Printable puzzle support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Digit Matrix free?

Digit Matrix is free to download, with in-app purchases available.

### Is K.O. Nonogram free?

K.O. Nonogram is free to download, with no in-app purchases.

### Which has better reviews, Digit Matrix or K.O. Nonogram?

K.O. Nonogram is rated higher. Digit Matrix averages 3.6 out of 5 from 5 ratings, while K.O. Nonogram averages 5.0 from 2 ratings.

### Do Digit Matrix or K.O. Nonogram have ads?

Both Digit Matrix and K.O. Nonogram show ads.

### Which is updated more often, Digit Matrix or K.O. Nonogram?

Digit Matrix ships an update every 3 weeks, and K.O. Nonogram every 5 days. Most recently, Digit Matrix was updated on September 16, 2026 and K.O. Nonogram on September 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*