AU3FX vs BLEASS Multiband Compressor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AU3FX
This audio effect plugin offers a versatile stereo dynamics processor with a noise gate, compressor/expander, and limiter. Achieve subtle compression, extreme pumping, or maximum loudness with its highly tweakable controls and high-quality DSP.
- Noise gate
- Compressor/expander with side-chain
- Limiter/clipper
- Negative ratio support
- External side-chain input
- Parallel compression
- Adjustable envelope followers
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A highly tweakable stereo dynamics processor with noise gate, compressor/expander with external side-chain input, and limiter/clipper. From subtle compression, extreme pumping, to maximum loudness! This app is part of the AU3FX series, a collection of simple and powerful audio unit effect plugins. • High quality 32-bit DSP engine. • Compressor/expander with optional lookahead buffer. • Allows negative ratios for pumping/cancellation effects. • Hard or soft knee with adjustable radius. • Built-in side-chain low/high cut filters with monitor toggle. • External side-chain input. • Built-in noise gate. • Brick-wall lookahead limiter. • Hard/soft clipper. • Supports "parallell compression". • RMS/Peak envelope followers with attack, release and hold time. • Switchable between Linear and Logarithmic mode. • Automatic makeup gain. • Stereo link on/off. • Comes with several bundled presets. • Use multiple instances at the same time. • Save/load session state in host. • External access and control of all parameters from host. • User presets shared across hosts (on iOS 13 and later).
BLEASS Multiband Compressor
This audio processing tool offers precise control over music dynamics by separating audio into three frequency bands. It features a dual-stage processor for compression or expansion in each band, along with a flexible sidechain system for creative effects and corrective work. Achieve professional loudness and punch in your mixes.
- Multiband processing (3 bands)
- Dual-stage dynamics processor per band
- Compressor and expander modes
- Flexible sidechain system
- Soft clipping for saturation
- Dry/wet balance control
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BLEASS Multiband Compressor is the perfect tool for injecting loudness, power and punch into your mixes, stems and tracks. Whether you are creating music on-the-move on your iPad, producing your masterpiece in the studio, or doing both, BLEASS Multiband Compressor dispenses detailed precision control over your music's dynamics. One of the secret weapons of professional mix and mastering engineers, multiband dynamics processors have various advantages over conventional broadband processors. By separating your audio into three frequency bands, and processing each independently, BLEASS Multiband Compressor ensures that loud passages and transients in one frequency range do not impact on how the other bands behave. This eliminates the "volume pumping" effect often exhibited by broadband compressors, making BLEASS Multiband Compressor the perfect tool for processing drum kits, synths, pianos and – of course – full mixes and stems. The plugin works brilliantly with other sources too, from solo instruments to vocals and spoken voice. Unusually for a multiband processor, each of BLEASS Multiband Compressor's three bands features a dual stage dynamics processor. This consists of an Above stage that senses for and processes signals whose level exceeds the Above threshold, and a Below stage that senses for and processes signals that are quieter than the Below threshold. Additionally, each stage can operate as either a compressor or, by dialing in Ratio values below 1:1, an expander. Altogether this makes for phenomenally versatile control over the volume and loudness of your mixes, stems and parts. Another innovative feature of BLEASS Multiband Compressor is its flexible sidechain system. This allows you to choose which bands will key from the input signal in the normal way, and which will key from a filtered and/or external signal. This is ideal for corrective work such as controlling resonances, sibilances and other unwanted artefacts, but is also a fabulous creative tool, allowing for stylish ducking effects and ultra-deep dynamics control. Rounding things off, the plugin provides comprehensive output level and dry / wet balance control, along with a soft clipping feature that ensures overly-hot signals don't become nasty and harsh, but instead take on a classic valve-like saturation character. BLEASS Multiband Compressor stands out for its great sound, innovative features, versatile dynamics control, and exceptional efficiency. More information on https://www.bleass.com/multibandcompressor
Screenshots
Verdict
AU3FX and BLEASS Multiband Compressor both sit at 4.7 stars, but that hides the real split: 75% of AU3FX's written reviews are positive against 33% of BLEASS Multiband Compressor's. AU3FX also leads on update cadence (every 4 days vs every 8 months) and price ($6.99 vs $7.99). On rating, ratings volume, ads and in-app purchases 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
AU3FX costs $6.99 and BLEASS Multiband Compressor $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.7 for AU3FX against 4.7 for BLEASS Multiband Compressor. Both are backed by a comparable volume of ratings — 14 and 13 respectively. Written reviews are what separate them: 75% of AU3FX's written reviews are positive against 33% of BLEASS Multiband Compressor's.
AU3FX ships an update every 4 days, BLEASS Multiband Compressor every 8 months. The most recent releases landed on October 13, 2026 and September 30, 2026 respectively.
| Parameter | AU3FX | BLEASS Multiband Compressor |
|---|---|---|
| Price | $6.99 — better | $7.99 |
| Rating | 4.7 (14 ratings) | 4.7 (13 ratings) |
| Positive reviews | 75.0% of reviews — better | 33.3% of reviews |
| Number of ratings | 14 — better | 13 |
| Update frequency | Every 4 days — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 2 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Kymatica AB | BLEASS |
Customer experience
AU3FX
BLEASS Multiband Compressor
In-app purchases
AU3FX
No in-app purchases
BLEASS Multiband Compressor
No in-app purchases
Questions
Is AU3FX free?
Is BLEASS Multiband Compressor free?
Which has better reviews, AU3FX or BLEASS Multiband Compressor?
Do AU3FX or BLEASS Multiband Compressor have ads?
Which is updated more often, AU3FX or BLEASS Multiband Compressor?
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