Elyfino vs SL Knock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Elyfino
This audio effect plugin enhances low-end frequencies for producers and sound designers. It generates controlled subharmonics, adds optional fuzz for grit, and offers flexible tone shaping and wet/dry blending. Achieve larger-than-life bass and drums without sacrificing clarity.
- Source-tracked subharmonic generation
- Program-dependent compression
- Optional fuzz for harmonic edge
- Split-band tone shaping
- Wet/dry blend control
- MIDI learn and control
- Factory and user presets
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Some low-end tools are static. Elyfino listens! Feed it a bass line, 808, kick, synth, guitar, drum bus, or cinematic hit, and it builds movement from the source. Make the low end feel larger without losing control. Elyfino is a real-time AUv3 effect for producers, beatmakers, mixers, and sound designers who need controlled low-end and harmonic edge. It combines program-dependent compression, source-tracked subharmonics, fuzz (optional), split-band tone shaping, wet/dry blend, calibrated output, factory presets, user presets, and MIDI control in one focused processor. Key features: - Source-tracked subharmonic generation for bass, 808s, kicks, toms, synths, guitars, impacts, and post sound design. - Comp, Subharmonics, Sub Mix, Sub Focus, and Sub Detect controls for tuning depth, punch, tracking sensitivity, and sustain. - Clean Path routing for low-end reinforcement without fuzz. - Powerful Fuzz for growl, translation, density, and harmonic edge when the sound needs more bite. - Tone, Mix, and Output controls for color, parallel blend, and level-matched gain staging. - 25 factory presets covering Utility, Bass, Sub Design, Drums, Guitar, Synth, Post, and Parallel workflows. - User presets with iCloud-backed sync for keeping custom sounds available across devices signed into iCloud. - MIDI learn, manual CC assignment, default CC mapping, and optional MIDI broadcast for hardware and host control. - Standalone version with Audio Settings, CoreMIDI input routing, and a built-in manual for setup and reference. - Mono and stereo AUv3 effect operation with supported 44.1, 48, and 96 kHz sample rates. Use Elyfino subtly to reinforce fundamentals, harder to make bass and drums shake the earth, or in parallel when you want controlled weight under the original performance.
SL Knock
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SL Knock is a focused AUv3 dynamics and tone effect for adding punch, body and controlled low-end weight to drums, samples and loops. • Fast controls for impact and body • Tone shaping for tighter or heavier character • Mix control for parallel processing • Factory presets and local user presets • AUv3 support for compatible iPad music hosts Works as a standalone preview app and as an AUv3 effect in GarageBand, AUM, Cubasis, BeatMaker 3 and other compatible hosts.
Screenshots
Verdict
The clearest difference is price: SL Knock at $6.99 against Elyfino's $19.99. SL Knock also leads on iOS requirement (15.0 vs 17.0). On ads, in-app purchases 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
Elyfino costs $19.99 and SL Knock $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Elyfino | SL Knock |
|---|---|---|
| Price | $19.99 | $6.99 — better |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Christian Thompson | VIACHESLAV ZHILTSOV |
In-app purchases
Elyfino
No in-app purchases
SL Knock
No in-app purchases









