# Model 15 Modular Synthesizer vs miRack

The clearest difference is price: miRack at $14.99 against Model 15 Modular Synthesizer's $29.99. miRack also leads on update cadence (weekly vs every 3 months). Model 15 Modular Synthesizer's advantage is chart position (#158 vs unranked) and iOS requirement (12.4 vs 14.0). On rating, review sentiment, ratings volume and ads there is nothing between them.

Model 15 Modular Synthesizer costs $29.99 and miRack $14.99 up front. Model 15 Modular Synthesizer sells 11 one-off in-app purchases and miRack sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Model 15 Modular Synthesizer against 4.8 for miRack. Both are backed by a comparable volume of ratings — 898 and 682 respectively. Written reviews split almost evenly too, at 86% and 86% positive.

Model 15 Modular Synthesizer ships an update every 3 months, miRack weekly. The most recent releases landed on October 27, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Model 15 Modular Synthesizer | miRack |
| --- | --- | --- |
| Price | $29.99 | **$14.99** |
| Rating | **[4.9 (898 ratings)](https://appshunter.io/ios/app/model-15-modular-synthesizer/id1041465860/reviews)** | [4.8 (682 ratings)](https://appshunter.io/ios/app/mirack/id1468259834/reviews) |
| Number of ratings | **898** | 682 |
| Positive reviews | **86.5% of reviews** | 85.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#158** | — |
| Size | 857 MB | 359 MB |
| Requires iOS | **12.4** | 14.0 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Moog Music Inc.](https://appshunter.io/developer/396776421) | [MIFKI PTY LTD](https://appshunter.io/developer/316521224) |

## What reviewers say

### Model 15 Modular Synthesizer

[App page](https://appshunter.io/ios/app/model-15-modular-synthesizer/id1041465860)

**Currently charting:** #158 Top Paid · Music (US App Store)

This app recreates a legendary modular synthesizer for mobile devices. Explore its iconic modules, experiment with sound design, and create music with intuitive controls and advanced features.

**Highlights:** Iconic Moog module recreation, Monophonic and 4-voice polyphonic operation, Integrated Moog keyboard and ribbon controller, Sequencing arpeggiator, MIDI integration and external control, Looping recorder with overdubbing, AUv3 Audio Unit Extensions support

**Features:** Family Sharing, Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Symbiotic Equations | Free | one-time |
| Synthesist Toolkit | Free | one-time |
| Angular Arps | $1.99 | one-time |
| Sonic Mayhem | $2.99 | one-time |
| Sinfonietta Sintesi | $2.99 | one-time |
| Psychotropic Synthesis | $2.99 | one-time |
| Alien Systems | $3.99 | one-time |
| Textural Points | $4.99 | one-time |
| Mid-Century Moog | $4.99 | one-time |
| Dynamic Drones | $4.99 | one-time |
| Mercurial Strategies | $5.99 | one-time |

**What reviewers like**

- 🚀 Incredible sound quality
- 👍 Authentic Moog emulation
- 💡 Great for learning modular synthesis
- 🎨 Beautiful and detailed interface
- 🎹 Expressive MIDI capabilities

**What reviewers complain about**

- 🐛 Occasional crashes and glitches
- 🔍 Difficult to navigate on smaller screens
- 🕹️ Challenging to patch and tweak
- 🔋 High CPU usage

**Reported bugs**

- Arpeggiator direction not working as expected
- Distortion and audio issues on latest iOS versions
- Incompatibility with certain DAWs

**Requested features**

- More in-depth tutorials
- Ability to customize module layout
- Zoom/overview option for entire system
- Expanded preset library
- Midi mapping for arpeggiator


### miRack

[App page](https://appshunter.io/ios/app/mirack/id1468259834)

This app offers a comprehensive Eurorack-style modular synthesizer environment for creating custom synths, audio/MIDI effects, and controlling other applications. It features a vast library of modules and integrates with hardware and software for flexible music production and live performance.

**Highlights:** Polyphonic Eurorack-style modular environment, Over 800 third-party modules, AUv3 plugin hosting, Multi-channel audio input/output, MIDI input/output with clock sync, Ableton Link support, iCloud patch syncing

**Features:** Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |
| AUv3 Hosting Modules | $4.99 | one-time |
| Controller Module | $4.99 | one-time |

**What reviewers like**

- 🚀 Powerful modular synth capabilities
- 👍 Intuitive touch-based interface
- 🎨 Vast selection of modules
- 💰 Great value for the price
- 🔌 Seamless integration with external controllers

**What reviewers complain about**

- 🐛 Occasional crashes and stability issues
- 📚 Lack of built-in documentation and tutorials
- 🔀 Difficulty navigating and managing patches
- 🔇 Missing audio recording and export features

**Reported bugs**

- Knob controls sometimes become unresponsive
- Saving and loading patches can be unreliable
- Compatibility issues with older iPad models

**Requested features**

- Add polyphonic support
- Implement undo/redo functionality
- Integrate with popular DAWs and audio apps
- Provide more comprehensive module library
- Add preset management and sharing options


## Frequently asked questions

### Is Model 15 Modular Synthesizer free?

Model 15 Modular Synthesizer costs $29.99, and also offers in-app purchases.

### Is miRack free?

miRack costs $14.99, and also offers in-app purchases.

### Which has better reviews, Model 15 Modular Synthesizer or miRack?

Model 15 Modular Synthesizer is rated higher. Model 15 Modular Synthesizer averages 4.9 out of 5 from 898 ratings, while miRack averages 4.8 from 682 ratings.

### Do Model 15 Modular Synthesizer or miRack have ads?

Neither Model 15 Modular Synthesizer nor miRack shows ads.

### Which is updated more often, Model 15 Modular Synthesizer or miRack?

Model 15 Modular Synthesizer ships an update every 3 months, and miRack weekly. Most recently, Model 15 Modular Synthesizer was updated on October 27, 2026 and miRack on October 26, 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.*