# M vs AU Studio

The clearest difference is review sentiment: AU Studio at 50% against M's 0%. AU Studio also leads on rating (4.5 vs 2.5) and in-app purchases (none vs 5). M's advantage is price (Free vs $9.99) and iOS requirement (12.0 vs 17.0). On ratings volume, update cadence and device support there is nothing between them.

M is free to download; AU Studio costs $9.99 up front. M sells 5 in-app purchases, starting at $3.49 per month. AU Studio asks for nothing beyond the download.

AU Studio holds the better App Store score, 4.5 against 2.5. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 0% of M's written reviews are positive against 50% of AU Studio's.

M ships an update every 3 weeks, AU Studio monthly. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | M | AU Studio |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [2.5 (4 ratings)](https://appshunter.io/ios/app/m-gen/id1484274043/reviews) | **[4.5 (4 ratings)](https://appshunter.io/ios/app/au-studio/id6763809742/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 25 MB | 7 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Nick Carter-Bond](https://appshunter.io/developer/1162644925) | [Christian Thompson](https://appshunter.io/developer/1511795684) |

## What reviewers say

### M

[App page](https://appshunter.io/ios/app/m-gen/id1484274043)

This app automatically composes original music based on your chosen settings for duration, tempo, and style. You can refine compositions by liking or disliking sections, and export generated music in MP3, MIDI, or sheet music formats. It's designed for content creators, producers, and music enthusiasts.

**Highlights:** Automated music composition, Customizable duration, tempo, and style, Like/Dislike feedback for refinement, Export in MP3, MIDI, and PDF formats, Track Editor for rewriting sections, Separate track generation (melody, harmony, bass, percussion)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Commercial Use License | $3.49 | per month |
| Sharing Pack | $4.49 | per month |
| Library Expansion (+50 slots) | $2.99 | one-time |
| Library Expansion (+100 slots) | $4.99 | one-time |
| Downloads Pack | $6.99 | one-time |


### AU Studio

[App page](https://appshunter.io/ios/app/au-studio/id6763809742)

This app acts as a dedicated host for Audio Unit extensions, allowing musicians and developers to inspect, audition, and test installed audio plugins. It provides detailed information about each unit's capabilities and behavior without requiring a full digital audio workstation.

**Highlights:** Scan and catalog installed Audio Units, Filter plugins by developer, type, and status, Load AUv3 interfaces or use detailed inspector, Inspect registry identity, MIDI support, and parameters, Route CoreMIDI sources and audition audio effects, Monitor runtime CPU and memory usage, Built-in manual for guidance

**In-app purchases:** none


## Frequently asked questions

### Is M free?

M is free to download, with in-app purchases available.

### Is AU Studio free?

AU Studio costs $9.99, with no in-app purchases.

### Which has better reviews, M or AU Studio?

AU Studio is rated higher. M averages 2.5 out of 5 from 4 ratings, while AU Studio averages 4.5 from 4 ratings.

### Which is updated more often, M or AU Studio?

M ships an update every 3 weeks, and AU Studio monthly. Most recently, M was updated on October 9, 2026 and AU Studio on October 1, 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.*