# Rean Code vs Music Theory Matrix

The clearest difference is update cadence: Rean Code at every 3 months against Music Theory Matrix's every 7 months. Rean Code also leads on iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Rean Code ships an update every 3 months, Music Theory Matrix every 7 months. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Rean Code | Music Theory Matrix |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/music-theory-matrix/id6746297669/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 7 months |
| Monetization | — | Free |
| Size | 44 MB | 9 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Puthea Khem](https://appshunter.io/developer/1471748857) | [Hamoon Nozari](https://appshunter.io/developer/1604652329) |

## What reviewers say

### Rean Code

[App page](https://appshunter.io/ios/app/rean-code/id1613465691)

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

**In-app purchases:** none


### Music Theory Matrix

[App page](https://appshunter.io/ios/app/music-theory-matrix/id6746297669)

Explore the mathematical and computational underpinnings of music theory. This app uses algorithms, data visualization, and computer science concepts to make understanding scales, chords, and harmony intuitive and accessible, even without prior music knowledge.

**Highlights:** Mathematical frequency calculations, Interactive piano with note mapping, Chord and scale generation algorithms, Data visualization of musical patterns, Instrument synthesis for audio examples, Computer science concepts applied to music

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

**In-app purchases:** none


## Frequently asked questions

### Is Rean Code free?

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

### Is Music Theory Matrix free?

Music Theory Matrix is free to download, with no in-app purchases.

### Do Rean Code or Music Theory Matrix have ads?

Neither Rean Code nor Music Theory Matrix shows ads.

### Which is updated more often, Rean Code or Music Theory Matrix?

Rean Code ships an update every 3 months, and Music Theory Matrix every 7 months. Most recently, Rean Code was updated on October 8, 2026 and Music Theory Matrix on October 13, 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.*