# Matrix math calculator Pro vs Scale Ruler

The clearest difference is price: Scale Ruler at Free against Matrix math calculator Pro's $0.99. Scale Ruler also leads on update cadence (every 2 weeks vs every 3 months). Matrix math calculator Pro's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 17.0). On ads and device support there is nothing between them.

Scale Ruler is free to download; Matrix math calculator Pro costs $0.99 up front. Scale Ruler sells 1 one-off in-app purchase. Matrix math calculator Pro asks for nothing beyond the download.

Matrix math calculator Pro ships an update every 3 months, Scale Ruler every 2 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Matrix math calculator Pro | Scale Ruler |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 52 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [camilo arcila](https://appshunter.io/developer/993049913) | [佳 赵](https://appshunter.io/developer/6802149278) |

## What reviewers say

### Matrix math calculator Pro

[App page](https://appshunter.io/ios/app/matrix-math-calculator-pro/id993049914)

Perform advanced matrix operations including addition, subtraction, and multiplication. Calculate the transpose, adjoint, inverse, determinant, and rank of matrices. Supports matrices of any dimension (MxN).

**Highlights:** Matrix Addition, Matrix Subtraction, Matrix Multiplication, Transpose Matrix, Adjoint Matrix, Inverse Matrix, Determinant Calculation, Rank Calculation

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

**In-app purchases:** none


### Scale Ruler

[App page](https://appshunter.io/ios/app/scale-ruler-pocket-ruler/id6802178983)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scale Ruler Pro | $1.99 | one-time |


## Frequently asked questions

### Is Matrix math calculator Pro free?

Matrix math calculator Pro costs $0.99, with no in-app purchases.

### Is Scale Ruler free?

Scale Ruler is free to download, with in-app purchases available.

### Do Matrix math calculator Pro or Scale Ruler have ads?

Neither Matrix math calculator Pro nor Scale Ruler shows ads.

### Which is updated more often, Matrix math calculator Pro or Scale Ruler?

Matrix math calculator Pro ships an update every 3 months, and Scale Ruler every 2 weeks. Most recently, Matrix math calculator Pro was updated on October 25, 2026 and Scale Ruler on October 24, 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.*