Matrix math calculator Pro vs Scale Ruler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Matrix math calculator Pro
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).
- Matrix Addition
- Matrix Subtraction
- Matrix Multiplication
- Transpose Matrix
- Adjoint Matrix
- Inverse Matrix
- Determinant Calculation
- Rank Calculation
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A spectacular application in which you can do operations with matrices, such as Addition, Subtraction and Multiplication. In addition you can also find the Transposed matrix, Adjoint matrix, Inverse matrix, Determinant and Rank of a matrix. (MxN)
Scale Ruler
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Scale Ruler brings a realistic triangular scale to your iPhone, designed for drafting, measuring, studying, and everyday reference. Explore multiple scale standards with a smooth, swipeable ruler interface that recreates the familiar look and feel of a physical triangular scale. KEY FEATURES • Realistic Triangular Scale View all three scale faces and swipe smoothly through detailed graduations. • Multiple Scale Standards Choose from commonly used standards for China, Japan, the United States, the United Kingdom, Germany, and more. • Custom Scale Ratios Create your own scale setup by adjusting ratios and graduations for individual ruler faces. • Labels & Markers Add custom labels and markers directly to the ruler for scale notes, project names, dates, and other references. • Automatic & Manual Calibration The app can calibrate based on your device display, with manual fine-tuning available using a physical ruler when greater precision is required. • Night Mode Use a darker interface for more comfortable viewing in low-light environments. Whether you're an architect, designer, engineer, student, model maker, or simply need a convenient scale reference, Scale Ruler puts a versatile triangular scale right on your iPhone. Some advanced customization features may require an in-app purchase.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Matrix math calculator Pro | Scale Ruler |
|---|---|---|
| Price | $0.99 | Free — better |
| Positive reviews | 33.3% of reviews | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, Apple Watch |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 52 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | camilo arcila | 佳 赵 |
In-app purchases
Matrix math calculator Pro
No in-app purchases
Scale Ruler
- Scale Ruler Pro$1.99
Questions
Is Matrix math calculator Pro free?
Is Scale Ruler free?
Do Matrix math calculator Pro or Scale Ruler have ads?
Which is updated more often, Matrix math calculator Pro or Scale Ruler?
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