StepLoom vs Seyfert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StepLoom
Create electronic music with a touch-friendly groovebox. Quickly sketch beats, basslines, and melodies using a step sequencer, piano-roll editing, and arrangement views. Supports AUv3 plugins for expanded sound design.
- Touch-friendly beat and melody workflow
- Step sequencer and piano-roll editing
- Timeline, Session, and Flow arrangement views
- AUv3 instrument and effect plugin support
- Mixer controls for sound shaping
- MIDI input and external clock sync
- Export audio, stems, or MIDI
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StepLoom is a fast, touch-first electronic music sketchpad for making beats, loops, basslines, and melody ideas on iPhone and iPad. It gives you the focus of a compact groovebox without the weight of a full DAW, so you can start a rhythm, shape a synth line, try an AUv3 instrument, arrange patterns, and keep moving while the idea is fresh. Create drum patterns with a step sequencer, write melodic parts with piano-roll style editing, stack chords, add legato, adjust BPM, mix tracks, and switch sounds. Add Sample tracks by importing audio or recording directly in the Tracks view, then use the waveform editor to trim, reverse, normalize, tune, and shape One-shot or Loop playback. The project Media Library keeps custom audio available for reuse and arrangement. Turn loops into songs with three complementary arrangement views: shape Patterns and audio clips on the Timeline, launch quantized Patterns and Scenes in Session, or build visual paths and probability rules in Flow. Draw or record automation for mixer controls and supported AUv3 parameters. When you want to go beyond the built-in sounds, add AUv3 instrument or effect plugins, choose exposed plugin presets, open compatible plugin interfaces, and activate Plugin Sound directly from the sound picker. Optional iCloud sync keeps compatible projects and project media available across your Apple devices. StepLoom continues to work locally when sync is disabled. StepLoom is built for quick electronic music drafts: open the app, tap a grid, hear the result, and turn a loop into a structured idea. Main features: - Touch-friendly beat and melody workflow - Drum, melody, and custom Sample tracks - Step sequencer with playback highlight and loop control - Piano-roll style melody editing with chords and legato - Audio import and microphone sample recording - Waveform sample editor with trim, reverse, normalize, gain, tuning, One-shot, and Loop controls - Project Media Library for reusable custom audio - Timeline editing with drag, resize, layers, sections, loop ranges, and multi-selection - Quantized Pattern and Scene launching with Session performance recording - Blueprint-style Flow rules with Next, Jump, Random, Stop, and probability - AUv3 instrument and effect plugin slots - Plugin preset reading for AUv3s that expose factory presets - Plugin Sound option for playing tracks through AUv3 instruments - Mixer and AUv3 parameter automation - Mixer controls for volume, pan, EQ, filter, drive, meters, master gain, and limiter - MIDI input and external clock sync options - Optional iCloud project and media synchronization - Export full songs or the current pattern as audio, stems, or MIDI - Adaptive iPhone and iPad layouts StepLoom is for producers, beatmakers, songwriters, and electronic music learners who want a focused place to capture musical ideas before moving into a larger DAW.
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
The clearest difference is price: Seyfert at $1.99 against StepLoom's $3.99. Seyfert also leads on iOS requirement (15.0 vs 17.0). On rating, review sentiment, ratings volume and update cadence 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
StepLoom costs $3.99 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 StepLoom against 5.0 for Seyfert. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 11, 2026 and October 1, 2026 respectively.
| Parameter | StepLoom | Seyfert |
|---|---|---|
| Price | $3.99 | $1.99 — better |
| Rating | 5.0 (2 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 2 days | Every 2 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | 宁 徐 | Konstantin Torsten Schutz |
Customer experience
StepLoom
Seyfert
In-app purchases
StepLoom
No in-app purchases
Seyfert
No in-app purchases









