# Zeeon synth vs Krill Synthesizer

The clearest difference is in-app purchases: Krill Synthesizer at none against Zeeon synth's 3. Krill Synthesizer also leads on update cadence (weekly vs every 2 months) and review sentiment (100% vs 76%). Zeeon synth's advantage is ratings volume (209 vs 6). On ads and device support there is nothing between them.

Zeeon synth costs $14.99 and Krill Synthesizer $11.99 up front. Zeeon synth sells 3 one-off in-app purchases. Krill Synthesizer asks for nothing beyond the download.

Krill Synthesizer holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Zeeon synth has 209 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 76% of Zeeon synth's written reviews are positive against 100% of Krill Synthesizer's.

Zeeon synth ships an update every 2 months, Krill Synthesizer weekly. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Zeeon synth | Krill Synthesizer |
| --- | --- | --- |
| Price | $14.99 | **$11.99** |
| Rating | [4.8 (209 ratings)](https://appshunter.io/ios/app/zeeon-synth/id1230960440/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/krill-synthesizer/id6443337049/reviews)** |
| Number of ratings | **209** | 6 |
| Positive reviews | 76.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 27 MB | 8 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BeepStreet](https://appshunter.io/developer/321412321) | [Genuine Soundware](https://appshunter.io/developer/1560880481) |

## What reviewers say

### 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


### Krill Synthesizer

[App page](https://appshunter.io/ios/app/krill-synthesizer/id6443337049)

This virtual analog polyphonic synthesizer offers a streamlined interface for creating quick synth sounds on iPad. It features two oscillators, an LFO, a low-pass filter, two envelopes, and stereo effects, all accessible from a single screen.

**Highlights:** Virtual analog polyphonic synthesizer, Single-screen interface, Two oscillators, One LFO, Low-pass filter, Stereo chorus and ping-pong delay, 64 presets

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Zeeon synth free?

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

### Is Krill Synthesizer free?

Krill Synthesizer costs $11.99, with no in-app purchases.

### Which has better reviews, Zeeon synth or Krill Synthesizer?

Krill Synthesizer is rated higher. Zeeon synth averages 4.8 out of 5 from 209 ratings, while Krill Synthesizer averages 5.0 from 6 ratings.

### Do Zeeon synth or Krill Synthesizer have ads?

Neither Zeeon synth nor Krill Synthesizer shows ads.

### Which is updated more often, Zeeon synth or Krill Synthesizer?

Zeeon synth ships an update every 2 months, and Krill Synthesizer weekly. Most recently, Zeeon synth was updated on October 24, 2026 and Krill Synthesizer on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*