# Seyfert vs J.J.Breeze AUv3 Plugin

The clearest difference is price: J.J.Breeze AUv3 Plugin at Free against Seyfert's $1.99. Seyfert's advantage is in-app purchases (none vs 1) and update cadence (every 2 days vs every 9 days). On ads and device support there is nothing between them.

J.J.Breeze AUv3 Plugin is free to download; Seyfert costs $1.99 up front. J.J.Breeze AUv3 Plugin sells 1 one-off in-app purchase. Seyfert asks for nothing beyond the download.

Seyfert ships an update every 2 days, J.J.Breeze AUv3 Plugin every 9 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Seyfert | J.J.Breeze AUv3 Plugin |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/seyfert/id6794878287/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 9 days |
| Monetization | Paid | — |
| Size | 3 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [Konstantin Torsten Schutz](https://appshunter.io/developer/6778600016) | [Petar Gerov](https://appshunter.io/developer/1889588782) |

## What reviewers say

### Seyfert

[App page](https://appshunter.io/ios/app/seyfert/id6794878287)

This music effect plugin creates unique echoes that orbit and revolve around the listener. It offers advanced control over pitch, depth, and tone for each echo, with a built-in reverb and EQ for a rich soundscape. It functions as a standalone app or an Audio Unit for music production software.

**Highlights:** Orbital echo generation, Spin and Doppler pitch-bend effects, 3D binaural imaging, Octave shimmer and transpose, Per-echo tone and drive, Echo-focused reverb and EQ, Standalone and AUv3 support

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

**In-app purchases:** none


### J.J.Breeze AUv3 Plugin

[App page](https://appshunter.io/ios/app/jjbreeze-auv3-plugin/id6805087374)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| jj-breeze Unlock | $2.99 | one-time |


## Frequently asked questions

### Is Seyfert free?

Seyfert costs $1.99, with no in-app purchases.

### Is J.J.Breeze AUv3 Plugin free?

J.J.Breeze AUv3 Plugin is free to download, with in-app purchases available.

### Do Seyfert or J.J.Breeze AUv3 Plugin have ads?

Neither Seyfert nor J.J.Breeze AUv3 Plugin shows ads.

### Which is updated more often, Seyfert or J.J.Breeze AUv3 Plugin?

Seyfert ships an update every 2 days, and J.J.Breeze AUv3 Plugin every 9 days. Most recently, Seyfert was updated on October 31, 2026 and J.J.Breeze AUv3 Plugin on October 31, 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.*