# Midiflow Transposer (Audiobus) vs Mozaic Plugin Workshop

The clearest difference is review sentiment: Mozaic Plugin Workshop at 95% against Midiflow Transposer (Audiobus)'s 33%. Mozaic Plugin Workshop also leads on rating (5.0 vs 4.3) and update cadence (every 3 months vs every 9 months). Midiflow Transposer (Audiobus)'s advantage is price (Free vs $1.99) and iOS requirement (10.2 vs 12.4). On ads, in-app purchases and device support there is nothing between them.

Midiflow Transposer (Audiobus) is free to download; Mozaic Plugin Workshop costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mozaic Plugin Workshop holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Mozaic Plugin Workshop has 81 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 33% of Midiflow Transposer (Audiobus)'s written reviews are positive against 95% of Mozaic Plugin Workshop's.

Midiflow Transposer (Audiobus) ships an update every 9 months, Mozaic Plugin Workshop every 3 months. The most recent releases landed on August 18, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Midiflow Transposer (Audiobus) | Mozaic Plugin Workshop |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.3 (7 ratings)](https://appshunter.io/ios/app/midiflow-transposer-audiobus/id1175575102/reviews) | **[5.0 (81 ratings)](https://appshunter.io/ios/app/mozaic-plugin-workshop/id1457962653/reviews)** |
| Number of ratings | 7 | **81** |
| Positive reviews | 33.3% of reviews | **94.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#182** |
| Size | 5 MB | 3 MB |
| Requires iOS | **10.2** | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Johannes Doerr](https://appshunter.io/developer/622204117) | [Bram Bos](https://appshunter.io/developer/325340444) |

## What reviewers say

### Midiflow Transposer (Audiobus)

[App page](https://appshunter.io/ios/app/midiflow-transposer-audiobus/id1175575102)

This MIDI effect app for Audiobus 3 lets you transpose notes by octaves and half-tones. It's useful for playing external keyboards in different keys or creating harmonies. The app is free to use.

**Highlights:** Transpose notes by half-tones, Transpose notes by octaves, Create harmonies, Use multiple instances in Audiobus, Essential MIDI effect

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

**In-app purchases:** none


### Mozaic Plugin Workshop

[App page](https://appshunter.io/ios/app/mozaic-plugin-workshop/id1457962653)

**Currently charting:** #182 Top Paid · Music (US App Store)

Design and build your own custom MIDI plugins for music production. This tool offers a simple yet powerful scripting language and pre-built components to create filters, sequencers, and generative music tools. It integrates with AUv3 MIDI hosts for seamless workflow.

**Highlights:** Custom MIDI plugin creation, Easy-to-learn scripting language, Generative music tools, MIDI filters and sequencers, AUv3 support, Tilt sensor integration, Built-in script editor

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Midiflow Transposer (Audiobus) free?

Midiflow Transposer (Audiobus) is free to download, with no in-app purchases.

### Is Mozaic Plugin Workshop free?

Mozaic Plugin Workshop costs $1.99, with no in-app purchases.

### Which has better reviews, Midiflow Transposer (Audiobus) or Mozaic Plugin Workshop?

Mozaic Plugin Workshop is rated higher. Midiflow Transposer (Audiobus) averages 4.3 out of 5 from 7 ratings, while Mozaic Plugin Workshop averages 5.0 from 81 ratings.

### Do Midiflow Transposer (Audiobus) or Mozaic Plugin Workshop have ads?

Neither Midiflow Transposer (Audiobus) nor Mozaic Plugin Workshop shows ads.

### Which is updated more often, Midiflow Transposer (Audiobus) or Mozaic Plugin Workshop?

Midiflow Transposer (Audiobus) ships an update every 9 months, and Mozaic Plugin Workshop every 3 months. Most recently, Midiflow Transposer (Audiobus) was updated on August 18, 2026 and Mozaic Plugin Workshop on September 19, 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.*