# Music By Numbers vs Composer Lab

The clearest difference is price: Music By Numbers at Free against Composer Lab's $17.99. Music By Numbers also leads on ratings volume (7 vs 2). Composer Lab's advantage is update cadence (every 3 days vs every 8 days). On rating, review sentiment, ads and in-app purchases there is nothing between them.

Music By Numbers is free to download; Composer Lab costs $17.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Music By Numbers against 5.0 for Composer Lab. Both are backed by a comparable volume of ratings — 7 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Music By Numbers ships an update every 8 days, Composer Lab every 3 days. The most recent releases landed on October 14, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Music By Numbers | Composer Lab |
| --- | --- | --- |
| Price | **Free** | $17.99 |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/music-by-numbers/id1623018554/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/composer-lab/id6744673208/reviews) |
| Number of ratings | **7** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 3 days** |
| Monetization | **Free** | Paid |
| Size | 2 MB | 49 MB |
| Requires iOS | **18.0** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Timothy Bausch](https://appshunter.io/developer/1608625885) | [笑一 杨](https://appshunter.io/developer/1808689646) |

## What reviewers say

### Music By Numbers

[App page](https://appshunter.io/ios/app/music-by-numbers/id1623018554)

This application simplifies complex post-tonal music calculations. It allows users to instantly compute matrices and pitch set collections, with options to view detailed set information, rotate, invert, and flip sets. Users can also save and edit their work for future reference.

**Highlights:** Instant matrix and pitch set calculations, View pitch set information on matrix, Rotate, invert, and flip sets, Save and edit matrices and sets, Customizable display for 10 and 11, Customizable colors for PC selection and axis

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

**In-app purchases:** none


### Composer Lab

[App page](https://appshunter.io/ios/app/composer-lab/id6744673208)

Explore harmonic structures, scales, and microtonal tuning systems. This app offers tools for organizing pitch material, crafting custom tunings, and managing rhythmic units for songwriting and composition.

**Highlights:** Harmonic structure exploration, Custom tuning system creation, Rhythmic unit management, Microtonal scale playback, DAW file export (.scl, .tun), Pitch set theory principles

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

**In-app purchases:** none


## Frequently asked questions

### Is Music By Numbers free?

Music By Numbers is free to download, with no in-app purchases.

### Is Composer Lab free?

Composer Lab costs $17.99, with no in-app purchases.

### Which has better reviews, Music By Numbers or Composer Lab?

Music By Numbers and Composer Lab are both rated 5.0 out of 5 on the App Store, from 7 and 2 ratings respectively.

### Do Music By Numbers or Composer Lab have ads?

Neither Music By Numbers nor Composer Lab shows ads.

### Which is updated more often, Music By Numbers or Composer Lab?

Music By Numbers ships an update every 8 days, and Composer Lab every 3 days. Most recently, Music By Numbers was updated on October 14, 2026 and Composer Lab on October 22, 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.*