# StepPolyArp vs Mozaic Plugin Workshop

The clearest difference is price: Mozaic Plugin Workshop at $1.99 against StepPolyArp's $19.99. Mozaic Plugin Workshop also leads on in-app purchases (none vs 2) and rating (5.0 vs 4.8). On review sentiment, ratings volume, update cadence and ads there is nothing between them.

StepPolyArp costs $19.99 and Mozaic Plugin Workshop $1.99 up front. StepPolyArp sells 2 one-off in-app purchases. Mozaic Plugin Workshop asks for nothing beyond the download.

Mozaic Plugin Workshop holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 48 and 81 respectively. Written reviews point the same way: 87% of StepPolyArp's written reviews are positive against 95% of Mozaic Plugin Workshop's.

StepPolyArp ships an update every 2 months, Mozaic Plugin Workshop every 3 months. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | StepPolyArp | Mozaic Plugin Workshop |
| --- | --- | --- |
| Price | $19.99 | **$1.99** |
| Rating | [4.8 (48 ratings)](https://appshunter.io/ios/app/steppolyarp/id1361313588/reviews) | **[5.0 (81 ratings)](https://appshunter.io/ios/app/mozaic-plugin-workshop/id1457962653/reviews)** |
| Number of ratings | 48 | **81** |
| Positive reviews | 86.7% of reviews | **94.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#182** |
| Size | 38 MB | 3 MB |
| Requires iOS | 15.0 | **12.4** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Laurent Colson](https://appshunter.io/developer/381525765) | [Bram Bos](https://appshunter.io/developer/325340444) |

## What reviewers say

### StepPolyArp

[App page](https://appshunter.io/ios/app/steppolyarp/id1361313588)

This app functions as a real-time polyphonic and polyrhythmic MIDI step arpeggiator and sequencer. It can generate melodic patterns from input or operate as a standalone sequencer. Save and sync unlimited presets with iCloud, featuring extensive customization for patterns and step controllers.

**Highlights:** Standalone app and AUv3 MIDI effect plugin, Arpeggiator and step sequencer modes, Programmable step matrix with transposition lines, Polyrhythmic step controllers, Internal sound bank, Ableton Link and MIDI sync support, Unlimited preset saving with iCloud sync

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dance Horizons | $4.99 | one-time |
| Analog Sequence | $4.99 | one-time |


### 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 StepPolyArp free?

StepPolyArp costs $19.99, and also offers in-app purchases.

### Is Mozaic Plugin Workshop free?

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

### Which has better reviews, StepPolyArp or Mozaic Plugin Workshop?

Mozaic Plugin Workshop is rated higher. StepPolyArp averages 4.8 out of 5 from 48 ratings, while Mozaic Plugin Workshop averages 5.0 from 81 ratings.

### Do StepPolyArp or Mozaic Plugin Workshop have ads?

Neither StepPolyArp nor Mozaic Plugin Workshop shows ads.

### Which is updated more often, StepPolyArp or Mozaic Plugin Workshop?

StepPolyArp ships an update every 2 months, and Mozaic Plugin Workshop every 3 months. Most recently, StepPolyArp was updated on September 22, 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.*