Mix Bus Compressor vs Schlap AUv3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mix Bus Compressor
This audio plugin offers ultra-transparent compression with exceptionally low harmonic distortion. Its unique design provides immediate response without adding latency or phase distortion, making it ideal for real-time audio processing. The scalable interface ensures a clear visual experience on all iOS devices.
- Ultra-low harmonic distortion
- Unique envelope follower
- Immediate response time
- No added latency
- No phase distortion
- Scalable user interface
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This compressor has the lowest total harmonic distortion of any plugin we have seen, including desktop units. At the heart of it is a unique envelope follower design that makes it possible to compress the signal without creating distortion harmonics. On the spectrum of compressor tone that ranges from "vintage analog" to "pristine digital", this plugin sits at the extreme end of low-noise digital clarity, but it is different from other low-noise digital designs because it doesn't use digital look-ahead. Therefore its response time is immediate, it adds no extra delay to the signal chain, and it works great for processing real-time performance effects. It uses no oversampling so there is no phase distortion or loss of high-frequency energy from anti-aliasing filters. It also uses no digital-style filters (FIR filters) and no digital look-ahead, so it adds no additional latency to the signal chain. Although it is not a model of an existing piece analog hardware, every component of its signal path is realizable in the analog domain. We think of it as a digital model of our ideal analog compressor: it could exist as an analog circuit but would be very expensive to build with physical analog electronic parts. The user interface is 100% scalable, designed specifically for iOS, so it looks beautiful at any screen size or orientation, from tiny portrait views in AUM on iPhone to the largest full-screen views on iPad Pro.
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
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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.
Screenshots
Verdict
The clearest difference is rating: Schlap AUv3 at 4.9 against Mix Bus Compressor's 3.9. Schlap AUv3 also leads on review sentiment (100% vs 75%) and chart position (#176 vs unranked). Mix Bus Compressor's advantage is update cadence (every 6 weeks vs every 11 months). 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
Mix Bus Compressor costs $5.99 and Schlap AUv3 $4.99 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 3.9. Both are backed by a comparable volume of ratings — 8 and 17 respectively. Written reviews point the same way: 75% of Mix Bus Compressor's written reviews are positive against 100% of Schlap AUv3's.
Mix Bus Compressor ships an update every 6 weeks, Schlap AUv3 every 11 months. Both last shipped on October 24, 2026.
| Parameter | Mix Bus Compressor | Schlap AUv3 |
|---|---|---|
| Price | $5.99 | $4.99 — better |
| Rating | 3.9 (8 ratings) | 4.9 (17 ratings) — better |
| Positive reviews | 75.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 8 | 17 — better |
| Update frequency | Every 6 weeks — better | Every 11 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 | 10.2 — better | 11.0 |
| Further details — not scored | ||
| Size | 25 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Blue Mangoo Consulting Company Limited | Caelum Audio Ltd |
Customer experience
Mix Bus Compressor
Schlap AUv3
In-app purchases
Mix Bus Compressor
No in-app purchases
Schlap AUv3
No in-app purchases
Questions
Is Mix Bus Compressor free?
Is Schlap AUv3 free?
Which has better reviews, Mix Bus Compressor or Schlap AUv3?
Do Mix Bus Compressor or Schlap AUv3 have ads?
Which is updated more often, Mix Bus Compressor or Schlap AUv3?
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