Bliss AUv3 Sampler vs Seyfert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bliss AUv3 Sampler
This app transforms any sound into a playable synth instrument. It allows you to host and resample AUv3 instruments, offering deep modulation, studio effects, and extensive import capabilities for creating expressive music on the go.
- Host and resample AUv3 instruments
- Deep modulation and dual filters
- Full MPE expression support
- 7 studio effects with 8x oversampling
- 1 GB factory library
- Import SFZ, SoundFont2, EXS, Kontakt, Akai, and more
- Built-in wave editor and loop modes
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Bliss brings desktop-class sampling to iOS. The same desktop engine now in your hands, on stage, on the couch, anywhere. Load a sample, play an instrument. Bliss turns any sound into a rich, expressive, playable synth with a workflow built for speed and a sound built to impress. — HOST & RESAMPLE ANY AUv3 — Load any AUv3 instrument right inside Bliss and capture it into your own multi-zone instrument. Auto-sample across the keyboard with velocity layers, then play it back with zero CPU overhead — even offline. Export the result as standard SFZ or Bliss ZBP, ready to reuse anywhere. Turn any synth on your iPad into a lightweight, playable sampled instrument. — A REAL SAMPLER ENGINE — • Up to 64 voices of polyphony • Pristine SINC 128 interpolation (512-point mode for mastering-grade playback) • Mono, poly, legato with glide, and 4-voice unison with detune • NEON-optimized, native Apple Silicon performance — DUAL FILTERS — • Two 24 dB/oct filters: lowpass, highpass, bandpass, notch, peaking • Zipper-free cutoff, resonance and drive • Velocity and keyboard tracking — DEEP MODULATION — • Independent amp, mod, filter and LFO envelopes • Two syncable LFOs with configurable phase • Parameter morphing for evolving, living sounds • 8 assignable macro knobs — automatable from your DAW — FULL MPE EXPRESSION — Per-note pitch bend, timbre and pressure. Auto-configures with ROLI Seaboard, LinnStrument and Expressive E Osmose. — 7 STUDIO EFFECTS — Multiband limiter, soft clipper, stereo rotation, chorus, delay and reverb with 8x oversampling — plus per-slot bit reducer, phaser and distortion. Per-zone sends. — 1 GB FACTORY LIBRARY — Start making music instantly with 100+ ready-to-play instruments — keys, pads, basses, guitars, strings, winds, percussion and more. A free 1 GB download, available in-app. — IMPORT EVERYTHING — Bliss speaks every sampler dialect: SFZ, SoundFont2, EXS, Kontakt NKI (1–4), Akai S1000/S3000/S5000-6000, XPM Keygroups, Renoise and CUE sheets. Audio in WAV, AIFF, FLAC, OGG and MP3. — BUILT-IN EDITING — • Full wave editor with undo, 1:1 zoom, stereo/independent channel selections • Loop modes: forward, bidirectional, backward, crossfade, trim • Cut, paste, mix paste, fades, normalize • Visual key mapper for zones, velocity ranges and root keys • Tempo and transient auto-slicing — AUv3 + STANDALONE — Run Bliss standalone or as an Audio Unit v3 inside AUM, GarageBand, Cubasis, Logic and any AUv3 host. Fully automatable, resizable, and ready for your rig.
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.
Screenshots
Verdict
Bliss AUv3 Sampler and Seyfert both sit at 5.0 stars, but that hides the real split: 100% of Seyfert's written reviews are positive against 50% of Bliss AUv3 Sampler's. Seyfert also leads on price ($1.99 vs $19.99) and ratings volume (3 vs 1). On rating, update cadence, 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
Bliss AUv3 Sampler costs $19.99 and Seyfert $1.99 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 Bliss AUv3 Sampler against 5.0 for Seyfert. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews are what separate them: 50% of Bliss AUv3 Sampler's written reviews are positive against 100% of Seyfert's.
Bliss AUv3 Sampler ships an update every 4 days, Seyfert every 2 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Bliss AUv3 Sampler | Seyfert |
|---|---|---|
| Price | $19.99 | $1.99 — better |
| Rating | 5.0 (1 ratings) | 5.0 (3 ratings) |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 4 days | Every 2 days — better |
| 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 | 26 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | DiscoDSP LLC | Konstantin Torsten Schutz |
Customer experience
Bliss AUv3 Sampler
Seyfert
In-app purchases
Bliss AUv3 Sampler
No in-app purchases
Seyfert
No in-app purchases









