# Unit Converter Engineering Pro vs Linear Algebra

The clearest difference is in-app purchases: Linear Algebra at none against Unit Converter Engineering Pro's 2. Unit Converter Engineering Pro's advantage is update cadence (weekly vs every 5 weeks) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Unit Converter Engineering Pro sells 2 in-app purchases, starting at $5.99 per 7 days. Linear Algebra asks for nothing beyond the download.

Unit Converter Engineering Pro ships an update weekly, Linear Algebra every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Unit Converter Engineering Pro | Linear Algebra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/unit-converter-engineering-pro/id6757166485/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 77 MB | 73 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kaiguri Tech](https://appshunter.io/developer/1864995084) | [光浩 李](https://appshunter.io/developer/1576352133) |

## What reviewers say

### Unit Converter Engineering Pro

[App page](https://appshunter.io/ios/app/unit-converter-engineering-pro/id6757166485)

This app provides precise unit conversions for engineers, scientists, and students. It supports over 100 units across 35 categories, including scientific notation and 9-digit decimal precision. The tool works offline and adheres to SI, NIST, and ISO standards.

**Highlights:** Over 100 units in 35+ categories, Scientific notation support, 9-digit decimal precision, SI, NIST, ISO compliant, Offline functionality, Specialized units included

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Day Trial | $5.99 | per 7 days |
| Yearly Plan | $19.99 | per year |


### Linear Algebra

[App page](https://appshunter.io/ios/app/linear-algebra-matrix-solver/id6766080565)

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter Engineering Pro free?

Unit Converter Engineering Pro is free to download, with in-app purchases available.

### Is Linear Algebra free?

Linear Algebra is free to download, with no in-app purchases.

### Do Unit Converter Engineering Pro or Linear Algebra have ads?

Neither Unit Converter Engineering Pro nor Linear Algebra shows ads.

### Which is updated more often, Unit Converter Engineering Pro or Linear Algebra?

Unit Converter Engineering Pro ships an update weekly, and Linear Algebra every 5 weeks. Most recently, Unit Converter Engineering Pro was updated on October 24, 2026 and Linear Algebra on October 25, 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.*