# QuantiChord vs SL Knock

The clearest difference is update cadence: SL Knock at weekly against QuantiChord's every 2 months. SL Knock also leads on price ($6.99 vs $12.99). QuantiChord's advantage is iOS requirement (13.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

QuantiChord costs $12.99 and SL Knock $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

QuantiChord ships an update every 2 months, SL Knock weekly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | QuantiChord | SL Knock |
| --- | --- | --- |
| Price | $12.99 | **$6.99** |
| Rating | **[4.0 (11 ratings)](https://appshunter.io/ios/app/quantichord/id1439713799/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Paid | — |
| Size | 34 MB | 28 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Laurent Colson](https://appshunter.io/developer/381525765) | [VIACHESLAV ZHILTSOV](https://appshunter.io/developer/1862005860) |

## What reviewers say

### QuantiChord

[App page](https://appshunter.io/ios/app/quantichord/id1439713799)

This app generates chords from incoming notes and quantizes them to a selected scale. It functions as a standalone application or an AUv3 MIDI effect plugin, offering extensive MIDI connectivity and an internal sound bank.

**Highlights:** Standalone app and AUv3 MIDI effect plugin, Chord generation with transposing notes, Scale quantization, Full internal and external MIDI support, Internal sound bank, Preset management and sharing

**Features:** Vision Pro support

**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 QuantiChord free?

QuantiChord costs $12.99, with no in-app purchases.

### Is SL Knock free?

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

### Do QuantiChord or SL Knock have ads?

Neither QuantiChord nor SL Knock shows ads.

### Which is updated more often, QuantiChord or SL Knock?

QuantiChord ships an update every 2 months, and SL Knock weekly. Most recently, QuantiChord was updated on November 2, 2026 and SL Knock on October 31, 2026.

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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.*