Seyfert vs VU202 FX
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.
VU202 FX
This audio effect plugin brings the character of a sampler engine to your iOS music production workflow. Apply gritty resampling, lo-fi textures, and unique tone shaping to drums, loops, vocals, and more within your AUv3 host.
- AUv3 audio effect integration
- Sampler engine character
- Four tone shaping modes (HIFI, STANDARD, LOFI, LOFI2)
- Flexible input routing (LEFT, RIGHT, MONO, STEREO)
- Six-slot effects chain
- Extensive list of available effects
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VU202 FX brings the sound and behavior of the free VU202 app into your AUv3 workflow. It uses the same VU202 engine, rebuilt as a compact audio effect for producers who want that crunchy sampler character directly inside their favorite iOS host. Run drums, loops, synths, vocals, or whole buses through the VU202 signal path. Shape the tone with four character modes: HIFI, STANDARD, LOFI, and LOFI2. Choose LEFT, RIGHT, MONO, or STEREO input routing, set pad-style volume, then build your own six-slot effects chain. Available effects include Pitch, Pitch Free, Filter LP, Filter HP, Filter BP, EQ Low, EQ Mid, EQ High, Comp, Drum Comp, Limit, Delay, Tape Delay, Flanger, Phaser, Reverb, Ring Mod, and Vinyl Sim. Use it for gritty resampling color, lo-fi drums, filtered breaks, unstable tape-style echoes, pitch-shifted textures, crushed mono grooves, animated modulation, vinyl wear, and simple SP-style tone shaping without leaving your AUv3 session. VU202 FX is not a generic clean effect. It is made to give your audio the attitude of the VU202 engine: direct, rough, musical, and fast to control.
Screenshots
Verdict
Seyfert and VU202 FX both sit at 5.0 stars, but that hides the real split: 100% of Seyfert's written reviews are positive against 50% of VU202 FX's. VU202 FX's advantage is price ($0.99 vs $1.99). On rating, ratings volume, ads and in-app purchases 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
Seyfert costs $1.99 and VU202 FX $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Seyfert against 5.0 for VU202 FX. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews are what separate them: 100% of Seyfert's written reviews are positive against 50% of VU202 FX's.
| Parameter | Seyfert | VU202 FX |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | 5.0 (2 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 2 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Konstantin Torsten Schutz | Dariusz Chynek |
Customer experience
Seyfert
VU202 FX
In-app purchases
Seyfert
No in-app purchases
VU202 FX
No in-app purchases








