# ARP ODYSSEi vs Zeeon synth

The clearest difference is price: Zeeon synth at $14.99 against ARP ODYSSEi's $29.99. Zeeon synth also leads on update cadence (every 2 months vs every 8 months) and rating (4.8 vs 4.6). ARP ODYSSEi's advantage is iOS requirement (9.3 vs 15.6). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

ARP ODYSSEi costs $29.99 and Zeeon synth $14.99 up front. ARP ODYSSEi sells 2 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.

Zeeon synth holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 332 and 209 respectively. Written reviews point the same way: 65% of ARP ODYSSEi's written reviews are positive against 76% of Zeeon synth's.

ARP ODYSSEi ships an update every 8 months, Zeeon synth every 2 months. The most recent releases landed on October 16, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | ARP ODYSSEi | Zeeon synth |
| --- | --- | --- |
| Price | $29.99 | **$14.99** |
| Rating | [4.6 (332 ratings)](https://appshunter.io/ios/app/arp-odyssei/id1147432809/reviews) | **[4.8 (209 ratings)](https://appshunter.io/ios/app/zeeon-synth/id1230960440/reviews)** |
| Number of ratings | **332** | 209 |
| Positive reviews | 64.9% of reviews | **75.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 222 MB | 27 MB |
| Requires iOS | **9.3** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KORG INC.](https://appshunter.io/developer/363714046) | [BeepStreet](https://appshunter.io/developer/321412321) |

## What reviewers say

### ARP ODYSSEi

[App page](https://appshunter.io/ios/app/arp-odyssei/id1147432809)

Experience the iconic ARP analog synthesizer sound on your mobile device. This app faithfully reproduces the classic hardware with enhanced features like polyphony and built-in effects. Explore new sonic possibilities with its advanced arpeggiator and optional design revisions.

**Highlights:** Faithful circuit modeling of ARP ODYSSEY, Polyphony and chord playing, Programmable step sequencer arpeggiator, Built-in effects, Optional design revisions (Rev1, Rev2, Rev3), Integration with KORG Gadget

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Odyssey Rev1 | $4.99 | one-time |
| Odyssey Rev2 | $4.99 | one-time |

**What reviewers like**

- 🎨 Faithful recreation of the original ARP Odyssey
- 👍 Great sound quality and accurate emulation
- 🎹 Polyphonic and duophonic capabilities
- 🔊 Impressive built-in effects and sequencer
- 💻 Works well as a standalone app and within Gadget

**What reviewers complain about**

- 🔧 Lack of MIDI implementation (no program change, MIDI learn)
- 🔀 Issues with tuning and pitch tracking, especially in Gadget
- 🔒 No AUv3 support, limiting integration with other apps
- 📱 Small controls and interface can be difficult on smaller devices
- 🔋 CPU-intensive, causing performance issues on some devices

**Reported bugs**

- Crashes when trying to import user presets
- Disappearing sound issues
- Arpeggiator not working correctly within Gadget

**Requested features**

- Add AUv3 support for better DAW integration
- Implement MIDI learn and program change functionality
- Improve tuning and pitch tracking, especially in Gadget
- Optimize performance and reduce CPU usage
- Provide larger UI controls and better support for larger iPad screens


### 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 ARP ODYSSEi free?

ARP ODYSSEi 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, ARP ODYSSEi or Zeeon synth?

Zeeon synth is rated higher. ARP ODYSSEi averages 4.6 out of 5 from 332 ratings, while Zeeon synth averages 4.8 from 209 ratings.

### Do ARP ODYSSEi or Zeeon synth have ads?

Neither ARP ODYSSEi nor Zeeon synth shows ads.

### Which is updated more often, ARP ODYSSEi or Zeeon synth?

ARP ODYSSEi ships an update every 8 months, and Zeeon synth every 2 months. Most recently, ARP ODYSSEi was updated on October 16, 2026 and Zeeon synth on October 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.*