# Elyfino vs SL Knock

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.

Elyfino costs $19.99 and SL Knock $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Elyfino | SL Knock |
| --- | --- | --- |
| Price | $19.99 | **$6.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/elyfino/id6782300317/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | Paid | — |
| Size | 24 MB | 28 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christian Thompson](https://appshunter.io/developer/1511795684) | [VIACHESLAV ZHILTSOV](https://appshunter.io/developer/1862005860) |

## What reviewers say

### Elyfino

[App page](https://appshunter.io/ios/app/elyfino/id6782300317)

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.

**Highlights:** 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

**In-app purchases:** none


### SL Knock

[App page](https://appshunter.io/ios/app/sl-knock/id6797349065)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Elyfino free?

Elyfino costs $19.99, with no in-app purchases.

### Is SL Knock free?

SL Knock costs $6.99, with no in-app purchases.

### Do Elyfino or SL Knock have ads?

Neither Elyfino nor SL Knock shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*