# Multi dimention Matrix Calculator vs Scientific Calculator Plus 991

The clearest difference is rating: Scientific Calculator Plus 991 at 4.7 against Multi dimention Matrix Calculator's 4.0. Scientific Calculator Plus 991 also leads on update cadence (every 2 weeks vs every 8 months) and review sentiment (92% vs 67%). Multi dimention Matrix Calculator's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Scientific Calculator Plus 991 sells 4 in-app purchases, starting at $1.99 per month. Multi dimention Matrix Calculator asks for nothing beyond the download.

Scientific Calculator Plus 991 holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Scientific Calculator Plus 991 has 13K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 67% of Multi dimention Matrix Calculator's written reviews are positive against 92% of Scientific Calculator Plus 991's.

Multi dimention Matrix Calculator ships an update every 8 months, Scientific Calculator Plus 991 every 2 weeks. The most recent releases landed on October 17, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Multi dimention Matrix Calculator | Scientific Calculator Plus 991 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/multi-dimention-matrix-calculator/id1137726456/reviews) | **[4.7 (13K ratings)](https://appshunter.io/ios/app/scientific-calculator-plus-991/id1449106995/reviews)** |
| Number of ratings | 3 | **13K** |
| Positive reviews | 66.7% of reviews | **91.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 208 MB |
| Requires iOS | **8.0** | 15 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 9+ | 12+ |
| Developer | [Tarika Sultana](https://appshunter.io/developer/1135746252) | [Tran Duy](https://appshunter.io/developer/1449106994) |

## What reviewers say

### Multi dimention Matrix Calculator

[App page](https://appshunter.io/ios/app/multi-dimention-matrix-calculator/id1137726456)

Perform advanced matrix operations with ease. This tool supports calculations for matrices up to 100x100 dimensions, including addition, subtraction, multiplication, division, transpose, determinant, and inverse.

**Highlights:** Matrix addition and subtraction, Matrix multiplication and division, Transpose matrix calculation, Determinant calculation, Inverse matrix calculation, Supports up to 100x100 dimensions

**Features:** macOS Compatibility

**In-app purchases:** none


### Scientific Calculator Plus 991

[App page](https://appshunter.io/ios/app/scientific-calculator-plus-991/id1449106995)

This app is a powerful scientific calculator with graphing capabilities, a formula library, and a unit converter. It offers natural display input, advanced math functions for algebra, calculus, and statistics, and supports various number bases and formats.

**Highlights:** Natural display input, Graphing module, Formula library, Unit and currency converter, Algebra and calculus tools, Matrix and vector operations, Statistical calculations

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator month subscription | $1.99 | per month |
| Calculator yearly subscription | $3.99 | per year |
| Calculator Premium | $5.99 | one-time |
| Calculator Pro | $5.99 | one-time |

**What reviewers like**

- 👍 Intuitive and easy to use
- 🚀 Powerful and feature-rich
- 💡 Customizable interface and settings
- 🔍 Extensive library of formulas and equations
- ⚙️ Handles complex math and scientific functions well

**What reviewers complain about**

- 🐛 Occasional bugs and input issues
- 🔀 Confusing layout and button placement
- 💰 Some advanced features locked behind paywall

**Reported bugs**

- Keyboard input stops working after switching screens
- Incorrect calculation results for certain operations
- App crashes on some devices after recent update

**Requested features**

- Add option to change display font and color
- Improve cursor control and editing capabilities
- Implement auto-simplification for complex expressions
- Add more handwriting font options
- Expand graphing and equation solving features


## Frequently asked questions

### Is Multi dimention Matrix Calculator free?

Multi dimention Matrix Calculator is free to download, with no in-app purchases.

### Is Scientific Calculator Plus 991 free?

Scientific Calculator Plus 991 is free to download, with in-app purchases available.

### Which has better reviews, Multi dimention Matrix Calculator or Scientific Calculator Plus 991?

Scientific Calculator Plus 991 is rated higher. Multi dimention Matrix Calculator averages 4.0 out of 5 from 3 ratings, while Scientific Calculator Plus 991 averages 4.7 from 13K ratings.

### Do Multi dimention Matrix Calculator or Scientific Calculator Plus 991 have ads?

Scientific Calculator Plus 991 shows ads; Multi dimention Matrix Calculator does not.

### Which is updated more often, Multi dimention Matrix Calculator or Scientific Calculator Plus 991?

Multi dimention Matrix Calculator ships an update every 8 months, and Scientific Calculator Plus 991 every 2 weeks. Most recently, Multi dimention Matrix Calculator was updated on October 17, 2026 and Scientific Calculator Plus 991 on October 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*