Seyfert vs J.J.Breeze AUv3 Plugin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Seyfert
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.
- 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
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Seyfert is a delay unlike your others: every echo spawns at its own place in an orbit around you, and the whole constellation slowly revolves. Turn up Feedback and you don't just add repeats, you spawn more echoes into the orbit, from a single tight slap to a dense, spiralling cloud. Spin revolves the whole field around you. Doppler bends the echoes in pitch as they whirl toward and away. 3D wraps them around your head on headphones. Lift the repeats an octave into crystalline shimmer, drop them a sub-octave for weight, or detune them into a chorus. A lush reverb blooms around the echoes, never the dry signal, so your source stays clear while the repeats dissolve into space. Features: - Orbital echoes, where Feedback sets how many circle you - Spin, from a gentle drift to a full whirl - Doppler pitch-bend as the orbit turns - 3D binaural imaging for headphones - Shimmer and transpose, up or down one octave (octaves, fifths, sub-octaves) - Per-echo Trail tone, tape Wobble, and Drive - Lush reverb applied to the echoes - Full 5-band EQ on the wet signal - Orbit and Ping-Pong patterns, tempo sync - 18 factory presets, plus save your own - Standalone app and Audio Unit (AUv3) for GarageBand, AUM, Logic, and more No accounts, no tracking, no data collected. Everything stays on your device.
J.J.Breeze AUv3 Plugin
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jj-breeze is a stereo micro-pitch widener with vibrato and a warmth tone stage. It is an Audio Unit (AUv3) effect for iPhone and iPad. PRICING Free download. Full effect for 7 days from first launch (no signup). Then unlock permanently for a one-time purchase ($2.99 in the U.S. — price varies by region). No subscription. Open the app, tap Play, and listen to a built-in demo through the effect. Turn knobs, throw section switches, pick a panel finish (Field Green or Slate), and try factory presets. After you have launched the app once, the same plug-in is available in GarageBand, Logic for iPad, AUM, and other AUv3 hosts as: jj-breeze. WHAT IT DOES Shift creates width or a full-band pitch change with independent left and right pitch (±1 octave) and delay, plus a Focus crossover so the low end can stay dry. Vibrato adds a slow delay-based pitch wobble. Warmth is a final tone stage: low-shelf body, low-pass, and gentle saturation. SECTIONS • Shift — Pitch L/R, Delay L/R, Focus, Mix • Vibrato — Rate, Depth, Mix • Warmth — Tone, Drive, Body, Mix Each section has its own bat switch. Turning a section off removes it from the sound without wiping the knobs. PANEL Retro hardware look with two finishes — Field Green and Slate — chosen with a rotary selector. IN/OUT LED meters in the header. Save As… for user presets; swipe to rename or delete. FACTORY PRESETS Default, Stereo Width, JJ Cajun Moon, JJ Lies, JJ Dark Vocal, Octave Width, Deep Baritone, Slapback Twang. IN A DAW 1. Install and open jj-breeze once (this registers the Audio Unit). 2. GarageBand: Audio FX → Audio Unit Extensions → jj-breeze 3. Logic for iPad: Audio Units → Gerov 4. AUM and other AUv3 hosts: look for: jj-breeze This app is a working host, not an empty wrapper. You can hear and edit the effect without leaving the app. Microphone input in the host is optional (Demo Loop is the default). jj-breeze is an original effect. It is not affiliated with any third-party plug-in vendor or recording artist.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Seyfert | J.J.Breeze AUv3 Plugin |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 4 MB |
| Age rating | 4+ | +4 |
| Developer | Konstantin Torsten Schutz | Petar Gerov |
In-app purchases
Seyfert
No in-app purchases
J.J.Breeze AUv3 Plugin
- jj-breeze Unlock$2.99









