# Digit Matrix vs K.O. Nonogram Pro

The clearest difference is review sentiment: Digit Matrix at 100% against K.O. Nonogram Pro's 0%. Digit Matrix also leads on price (Free vs $9.99). K.O. Nonogram Pro's advantage is in-app purchases (none vs 6) and update cadence (every 6 days vs every 3 weeks). On ads, device support and iOS requirement there is nothing between them.

Digit Matrix is free to download; K.O. Nonogram Pro costs $9.99 up front. Digit Matrix sells 6 one-off in-app purchases. K.O. Nonogram Pro asks for nothing beyond the download.

Digit Matrix ships an update every 3 weeks, K.O. Nonogram Pro every 6 days. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Digit Matrix | K.O. Nonogram Pro |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[3.6 (5 ratings)](https://appshunter.io/ios/app/digit-matrix-math-puzzles/id1450134270/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 11 MB | 28 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 Pro

[App page](https://appshunter.io/ios/app/ko-nonogram-pro/id6737248261)

This app provides instant solutions and solving steps for Nonogram puzzles. It supports grids from 5x5 to 50x50 and offers features like cloud backup and printing capabilities. Enjoy an ad-free experience with unlimited prompts and access to all puzzles.

**Highlights:** Instant puzzle solutions, Unlimited prompts, Unlock all puzzles, Print puzzles, Cloud backup, Supports 5x5 to 50x50 grids

**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 Pro free?

K.O. Nonogram Pro costs $9.99, with no in-app purchases.

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

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

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

Digit Matrix ships an update every 3 weeks, and K.O. Nonogram Pro every 6 days. Most recently, Digit Matrix was updated on October 3, 2026 and K.O. Nonogram Pro on October 7, 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.*