# Zeeon synth vs 7XDXFM 4OP FM Loop Maker

The clearest difference is price: 7XDXFM 4OP FM Loop Maker at $1.99 against Zeeon synth's $14.99. 7XDXFM 4OP FM Loop Maker also leads on in-app purchases (none vs 3) and update cadence (every 5 days vs every 2 months). Zeeon synth's advantage is rating (4.8 vs 4.0) and review sentiment (76% vs 50%). On ads, device support and iOS requirement there is nothing between them.

Zeeon synth costs $14.99 and 7XDXFM 4OP FM Loop Maker $1.99 up front. Zeeon synth sells 3 one-off in-app purchases. 7XDXFM 4OP FM Loop Maker asks for nothing beyond the download.

Zeeon synth holds the better App Store score, 4.8 against 4.0. 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 50% of 7XDXFM 4OP FM Loop Maker's.

Zeeon synth ships an update every 2 months, 7XDXFM 4OP FM Loop Maker every 5 days. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Zeeon synth | 7XDXFM 4OP FM Loop Maker |
| --- | --- | --- |
| Price | $14.99 | **$1.99** |
| Rating | **[4.8 (209 ratings)](https://appshunter.io/ios/app/zeeon-synth/id1230960440/reviews)** | [4.0 (6 ratings)](https://appshunter.io/ios/app/7xdxfm-4op-fm-loop-maker/id1589435250/reviews) |
| Number of ratings | **209** | 6 |
| Positive reviews | **76.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 27 MB | 14 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BeepStreet](https://appshunter.io/developer/321412321) | [Rob Wilmot](https://appshunter.io/developer/520672432) |

## 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


### 7XDXFM 4OP FM Loop Maker

[App page](https://appshunter.io/ios/app/7xdxfm-4op-fm-loop-maker/id1589435250)

Create complex FM synthesizer sounds and sequences with this 7-track music production tool. Features include LFO modulation, piano roll editing, and built-in effects like echo and reverb. Sync with other apps via Ableton Link or MIDI, and export your creations.

**Highlights:** 4 operator FM synthesizer, 7-track sequencer, LFO modulation, Piano roll editing, Echo and reverb effects, Ableton Link and MIDI sync, Audio export

**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 7XDXFM 4OP FM Loop Maker free?

7XDXFM 4OP FM Loop Maker costs $1.99, with no in-app purchases.

### Which has better reviews, Zeeon synth or 7XDXFM 4OP FM Loop Maker?

Zeeon synth is rated higher. Zeeon synth averages 4.8 out of 5 from 209 ratings, while 7XDXFM 4OP FM Loop Maker averages 4.0 from 6 ratings.

### Do Zeeon synth or 7XDXFM 4OP FM Loop Maker have ads?

Neither Zeeon synth nor 7XDXFM 4OP FM Loop Maker shows ads.

### Which is updated more often, Zeeon synth or 7XDXFM 4OP FM Loop Maker?

Zeeon synth ships an update every 2 months, and 7XDXFM 4OP FM Loop Maker every 5 days. Most recently, Zeeon synth was updated on October 29, 2026 and 7XDXFM 4OP FM Loop Maker on October 27, 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.*