# Engineering & Tech Animations vs Digit Matrix

The clearest difference is price: Digit Matrix at Free against Engineering & Tech Animations's $15.99. Digit Matrix also leads on update cadence (every 3 weeks vs every 9 months). Engineering & Tech Animations's advantage is in-app purchases (none vs 6) and ads (none vs shown). On device support there is nothing between them.

Digit Matrix is free to download; Engineering & Tech Animations costs $15.99 up front. Digit Matrix sells 6 one-off in-app purchases. Engineering & Tech Animations asks for nothing beyond the download.

Engineering & Tech Animations ships an update every 9 months, Digit Matrix every 3 weeks. Both last shipped on November 2, 2026.

## The numbers

| Metric | Engineering & Tech Animations | Digit Matrix |
| --- | --- | --- |
| Price | $15.99 | **Free** |
| Rating | — | **[3.8 (6 ratings)](https://appshunter.io/ios/app/digit-matrix-math-puzzles/id1450134270/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 30 MB | 11 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Willie van Schalkwyk](https://appshunter.io/developer/1016415734) | [振华 许](https://appshunter.io/developer/1437340417) |

## What reviewers say

### Engineering & Tech Animations

[App page](https://appshunter.io/ios/app/engineering-and-tech-animations/id1412547939)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Engineering & Tech Animations free?

Engineering & Tech Animations costs $15.99, with no in-app purchases.

### Is Digit Matrix free?

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

### Do Engineering & Tech Animations or Digit Matrix have ads?

Digit Matrix shows ads; Engineering & Tech Animations does not.

### Which is updated more often, Engineering & Tech Animations or Digit Matrix?

Engineering & Tech Animations ships an update every 9 months, and Digit Matrix every 3 weeks. Most recently, Engineering & Tech Animations was updated on November 2, 2026 and Digit Matrix on November 2, 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.*