# GridInstrument vs Mozaic Plugin Workshop

The clearest difference is rating: Mozaic Plugin Workshop at 5.0 against GridInstrument's 4.5. Mozaic Plugin Workshop also leads on review sentiment (95% vs 83%) and ratings volume (81 vs 11). GridInstrument's advantage is update cadence (weekly vs every 3 months) and iOS requirement (8.0 vs 12.4). On ads, in-app purchases, monetization model and device support there is nothing between them.

GridInstrument costs $3.99 and Mozaic Plugin Workshop $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 4.5. That said, the two scores are not equally well evidenced: Mozaic Plugin Workshop has 81 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 83% of GridInstrument's written reviews are positive against 95% of Mozaic Plugin Workshop's.

GridInstrument ships an update weekly, Mozaic Plugin Workshop every 3 months. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | GridInstrument | Mozaic Plugin Workshop |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| Rating | [4.5 (11 ratings)](https://appshunter.io/ios/app/gridinstrument/id1296511558/reviews) | **[5.0 (81 ratings)](https://appshunter.io/ios/app/mozaic-plugin-workshop/id1457962653/reviews)** |
| Number of ratings | 11 | **81** |
| Positive reviews | 83.3% of reviews | **94.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | Paid | Paid |
| Size | 15 MB | 3 MB |
| Requires iOS | **8.0** | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Decidedly, LLC](https://appshunter.io/developer/783782943) | [Bram Bos](https://appshunter.io/developer/325340444) |

## What reviewers say

### GridInstrument

[App page](https://appshunter.io/ios/app/gridinstrument/id1296511558)

This app transforms your iOS device into a unique musical instrument with a grid-based interface. Explore over 20 musical modes and various grid layouts. It also supports external MIDI controllers like the Launchpad for expanded creative possibilities.

**Highlights:** Grid-based note arrangement, Launchpad integration, Over 20 musical modes, Multiple grid layouts, Core MIDI out, Audiobus 3 MIDI support

**Features:** Vision Pro support

**In-app purchases:** none


### Mozaic Plugin Workshop

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

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 GridInstrument free?

GridInstrument costs $3.99, 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, GridInstrument or Mozaic Plugin Workshop?

Mozaic Plugin Workshop is rated higher. GridInstrument averages 4.5 out of 5 from 11 ratings, while Mozaic Plugin Workshop averages 5.0 from 81 ratings.

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

Neither GridInstrument nor Mozaic Plugin Workshop shows ads.

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

GridInstrument ships an update weekly, and Mozaic Plugin Workshop every 3 months. Most recently, GridInstrument was updated on November 3, 2026 and Mozaic Plugin Workshop on November 12, 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.*