# Model 15 Modular Synthesizer vs Zeeon synth

The clearest difference is price: Zeeon synth at $14.99 against Model 15 Modular Synthesizer's $29.99. Model 15 Modular Synthesizer's advantage is review sentiment (86% vs 76%) and ratings volume (898 vs 209). On rating, update cadence, ads and in-app purchases there is nothing between them.

Model 15 Modular Synthesizer costs $29.99 and Zeeon synth $14.99 up front. Model 15 Modular Synthesizer sells 11 one-off in-app purchases and Zeeon synth sells 3 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 Zeeon synth. Both are backed by a comparable volume of ratings — 898 and 209 respectively. Written reviews are what separate them: 86% of Model 15 Modular Synthesizer's written reviews are positive against 76% of Zeeon synth's.

Model 15 Modular Synthesizer ships an update every 3 months, Zeeon synth every 2 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Model 15 Modular Synthesizer | Zeeon synth |
| --- | --- | --- |
| Price | $29.99 | **$14.99** |
| Rating | **[4.9 (898 ratings)](https://appshunter.io/ios/app/model-15-modular-synthesizer/id1041465860/reviews)** | [4.8 (209 ratings)](https://appshunter.io/ios/app/zeeon-synth/id1230960440/reviews) |
| Number of ratings | **898** | 209 |
| Positive reviews | **86.5% of reviews** | 76.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 857 MB | 27 MB |
| Requires iOS | **12.4** | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Moog Music Inc.](https://appshunter.io/developer/396776421) | [BeepStreet](https://appshunter.io/developer/321412321) |

## What reviewers say

### Model 15 Modular Synthesizer

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

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


### Zeeon synth

[App page](https://appshunter.io/ios/app/zeeon-synth/id1230960440)

This app is a virtual analog synthesizer that recreates the sound and feel of classic hardware. It features a detailed circuit-modeling engine, powerful modulation, and multiple filter models for rich, organic soundscapes. Explore a vast array of presets and expand your sonic palette with additional sound banks.

**Highlights:** Circuit-modeling engine, Powerful modulation matrix, Dual oscillators with variable waveforms, Multiple filter models, Built-in effects unit, Audio Unit v3 support, Polyphonic step sequencer

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OI - Exploration Vol. 1 | $3.99 | one-time |
| BB Z-Space | $4.99 | one-time |
| BB Synthwave | $4.99 | one-time |

**What reviewers like**

- 🎨 Excellent sound quality
- 🎹 Intuitive and well-designed interface
- 🔧 Flexible and deep sound design capabilities
- 💻 Seamless integration as an AUv3 plugin
- 🎚️ Smooth and responsive controls

**What reviewers complain about**

- 🐛 Stability issues, crashes on some devices
- 🔌 Compatibility problems with newer iOS versions
- 📂 Preset management could be improved
- 🔀 Lack of MIDI learn and sequencer features
- 🖥️ UI scaling issues on larger iPad displays

**Reported bugs**

- Preset settings not retained after app restart
- Synth reverts to default settings when reopening Logic Pro project
- Crashes and freezes on certain iOS 14+ devices
- Inability to access in-app purchases from within the app

**Requested features**

- Add MIDI learn functionality
- Implement a more robust preset management system
- Include a built-in sequencer with save/load capabilities
- Improve UI scaling and layout for larger iPad screens
- Provide better integration with inter-app audio and Audiobus


## Frequently asked questions

### Is Model 15 Modular Synthesizer free?

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

### Is Zeeon synth free?

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

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

Model 15 Modular Synthesizer is rated higher. Model 15 Modular Synthesizer averages 4.9 out of 5 from 898 ratings, while Zeeon synth averages 4.8 from 209 ratings.

### Do Model 15 Modular Synthesizer or Zeeon synth have ads?

Neither Model 15 Modular Synthesizer nor Zeeon synth shows ads.

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

Model 15 Modular Synthesizer ships an update every 3 months, and Zeeon synth every 2 months. Most recently, Model 15 Modular Synthesizer was updated on October 29, 2026 and Zeeon synth on October 30, 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.*