# Matrix math calculator vs Decider

The clearest difference is review sentiment: Decider at 100% against Matrix math calculator's 0%. Decider also leads on update cadence (daily vs every 3 months). Matrix math calculator's advantage is iOS requirement (13.0 vs 17.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Matrix math calculator ships an update every 3 months, Decider daily. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Matrix math calculator | Decider |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/matrix-math-calculator/id993273855/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free | Free |
| Size | 52 MB | 2 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [camilo arcila](https://appshunter.io/developer/993049913) | [Erfan Enayati](https://appshunter.io/developer/1799763543) |

## What reviewers say

### Matrix math calculator

[App page](https://appshunter.io/ios/app/matrix-math-calculator/id993273855)

Perform various matrix operations including addition, subtraction, and multiplication. Calculate the transposed matrix, adjoint, inverse, determinant, and rank. Supports matrices of any size (MxN).

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

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

**In-app purchases:** none


### Decider

[App page](https://appshunter.io/ios/app/decider/id6743804050)

This app helps resolve simple decisions by randomly selecting one of several participants. Place 2-5 fingers on the screen, and it will randomly pick one person's finger after a short period.

**Highlights:** Randomly selects one finger, Supports 2-5 participants, Simple touch interface, Quick decision making

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Matrix math calculator free?

Matrix math calculator is free to download, with no in-app purchases.

### Is Decider free?

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

### Do Matrix math calculator or Decider have ads?

Neither Matrix math calculator nor Decider shows ads.

### Which is updated more often, Matrix math calculator or Decider?

Matrix math calculator ships an update every 3 months, and Decider daily. Most recently, Matrix math calculator was updated on November 1, 2026 and Decider on October 28, 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.*