Comparison

Mix Bus Compressor vs Schlap AUv3

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Ultra-low harmonic distortion
  • Unique envelope follower
  • Immediate response time
  • No added latency
  • No phase distortion
  • Scalable user interface
Features
Read full description

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.

About

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.

Highlights
  • Aggressive program-dependent compressor
  • RMS detection for dynamic sound
  • Standalone app and AUv3 plugin
  • Inspired by vintage hardware
  • Enhances track energy and impact
Currently charting
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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

Mix Bus Compressor4 screens
Schlap AUv32 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Mix Bus Compressor ships an update every 6 weeks, Schlap AUv3 every 11 months. Both last shipped on October 24, 2026.

Scorecard5 real differences · 6 level
Mix Bus Compressor versus Schlap AUv3: the parameters behind the verdict, then further details
ParameterMix Bus CompressorSchlap AUv3
Price$5.99$4.99 — better
Rating3.9 (8 ratings)4.9 (17 ratings) — better
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings817 — better
Update frequencyEvery 6 weeks — betterEvery 11 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#176 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.2 — better11.0
Further details — not scored
Size25 MB5 MB
Age rating4+4+
DeveloperBlue Mangoo Consulting Company LimitedCaelum Audio Ltd

Customer experience

Mix Bus Compressor

All ratings8 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Schlap AUv3

All ratings17 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Mix Bus Compressor

No in-app purchases

None

Schlap AUv3

No in-app purchases

Questions

Is Mix Bus Compressor free?
Mix Bus Compressor costs $5.99, with no in-app purchases.
Is Schlap AUv3 free?
Schlap AUv3 costs $4.99, with no in-app purchases.
Which has better reviews, Mix Bus Compressor or Schlap AUv3?
Schlap AUv3 is rated higher. Mix Bus Compressor averages 3.9 out of 5 from 8 ratings, while Schlap AUv3 averages 4.9 from 17 ratings.
Do Mix Bus Compressor or Schlap AUv3 have ads?
Neither Mix Bus Compressor nor Schlap AUv3 shows ads.
Which is updated more often, Mix Bus Compressor or Schlap AUv3?
Mix Bus Compressor ships an update every 6 weeks, and Schlap AUv3 every 11 months. Most recently, Mix Bus Compressor was updated on October 24, 2026 and Schlap AUv3 on October 24, 2026.

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