Schlap AUv3 vs KNOCK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Schlap AUv3
This audio plugin offers an aggressive, characterful compressor inspired by vintage hardware. It enhances tracks with energy and impact by utilizing RMS detection for dynamic and punchy sound. It functions as a standalone app or an AUv3 plugin within music production hosts.
- Aggressive program-dependent compressor
- RMS detection for dynamic sound
- Standalone app and AUv3 plugin
- Inspired by vintage hardware
- Enhances track energy and impact
Read full descriptionHide full description
Schlap is a characterful, colourful and aggressive sounding program-dependent AUv3, IAA & standalone compressor. It takes inspiration from hardware RMS compressors of the past and evolves them into a modern setting. If you want your tracks to be energetic, in-your-face and bold, make ‘em ‘Schlap’. The compressor uses a program-dependent attack and release influenced by old hardware which makes the compression sound characterful and dynamic. The RMS detection means that Schlap detects the average loudness of a signal, resulting in sudden short peaks being uncompressed so that they can attack hard and sound heavy hitting. Also inherently in RMS detection, there is a slight delay in compression which allows the initial, early transients to sneak through uncompressed so they keep their punch. You’ve got a safe, controlled track you think you’re happy with, but you have to ask yourself… ‘Does it Schlap?’ Schlap is both a stand-alone application as well as an AUv3 plugin, meaning it works within iOS and iPadOS hosts such as GarageBand.
KNOCK
Enhance your drum sounds with this audio plugin designed for professional mixing. It helps drums cut through the mix with a powerful, impactful sound. Optimized for ease of use, it suits both new and experienced music producers.
- Slap and punch through mixes
- Signature drum sound
- Extreme ease of use
- Seamless workflow integration
- Crafted by platinum producer
Read full descriptionHide full description
KNOCK is the last plugin you will ever need to make your drums slap and punch through your mix. This plugin was meticulously crafted by platinum producer & award winning sound designer, DECAP. It is inspired by the signature sound of his popular drum kit series DRUMS THAT KNOCK, which has helped shaped the sonics of modern music. KNOCK is optimized for extreme ease of use for beginners and professionals alike. Use KNOCK to make your drums slap, and take you to the next level. Whether you are new to producing, or a seasoned pro, KNOCK will seamlessly fit into your workflow.
Screenshots
Verdict
The clearest difference is rating: Schlap AUv3 at 4.9 against KNOCK's 4.0. Schlap AUv3 also leads on review sentiment (100% vs 58%) and price ($4.99 vs $9.99). On ratings volume, ads, in-app purchases and monetization model 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
Schlap AUv3 costs $4.99 and KNOCK $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Schlap AUv3 holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 17 and 22 respectively. Written reviews point the same way: 100% of Schlap AUv3's written reviews are positive against 58% of KNOCK's.
Schlap AUv3 ships an update every 11 months, KNOCK every 39 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Schlap AUv3 | KNOCK |
|---|---|---|
| Price | $4.99 — better | $9.99 |
| Rating | 4.9 (17 ratings) — better | 4.0 (22 ratings) |
| Positive reviews | 100.0% of reviews — better | 57.9% of reviews |
| Number of ratings | 17 | 22 — better |
| Update frequency | Every 11 months — better | Every 39 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #176 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 5 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Caelum Audio Ltd | Plugins That Knock |
Customer experience
Schlap AUv3
KNOCK
In-app purchases
Schlap AUv3
No in-app purchases
KNOCK
No in-app purchases








