AUFX vs miRack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AUFX
This app offers a versatile stereo dynamics processor with advanced features like a noise gate, compressor/expander, and limiter. It allows for a wide range of audio manipulation, from subtle adjustments to extreme effects, with external side-chain capabilities and high-quality DSP.
- Stereo dynamics processor
- Noise gate
- Compressor/expander
- External side-chain input
- Lookahead limiter
- High quality 32-bit DSP
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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 AUFX series, a collection of simple and powerful audio effect apps. • 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 through Inter-App Audio or Audiobus. • 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. • Process hardware input/output, or other apps through Inter-App Audio or Audiobus (input/filter/output slots supported). • Save, load and share user presets. • Supports Audiobus 2 state saving. • Comes with several bundled presets. • Fully MIDI controllable, including Virtual MIDI. • Background Audio. • Record the result directly in app. • Email recordings or export to AudioShare audio document manager app. • Access user presets and recordings through iTunes File Sharing.
miRack
This app offers a comprehensive Eurorack-style modular synthesizer environment for creating custom synths, audio/MIDI effects, and controlling other applications. It features a vast library of modules and integrates with hardware and software for flexible music production and live performance.
- Polyphonic Eurorack-style modular environment
- Over 800 third-party modules
- AUv3 plugin hosting
- Multi-channel audio input/output
- MIDI input/output with clock sync
- Ableton Link support
- iCloud patch syncing
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miRack is a polyphonic Eurorack-style modular environment. It aims to provide user experience and audio quality close to those of the real Eurorack hardware. miRack can be used to build custom synthesizers, audio and MIDI effects, control other apps and equipment, as a playground to explore and learn modular synths, and for live performances. miRack is also available on macOS, including Audio Unit and VST plugins. * Comes with more than 800 modules created by third-party developers and adapted for mobile devices by miRack team. New modules are added regularly. * Includes AUv3 plugin. Can work as an instrument, audio effect or MIDI processor. Supports parameter automation to record and automate changes of almost any virtual module control. * AUv3 hosting capabilities (in-app purchase). Incorporate any AUv3 instrument, effect or MIDI effect plugins into your patches. * Controller module (in-app purchase) allows to design AUv3 user interface for your patch. * Multi-channel audio input and output (in both standalone and AUv3 modes), with full support for Expert Sleepers audio interface modules to integrate with hardware Eurorack equipment. * MIDI input and output, including MIDI clock sync, and MIDI learn function. Automate and control your patch, or control other software and hardware instruments with powerful sequencer modules. * Ableton Link support to synchronise with other music software on the same device or over network. * iCloud support to sync patches between iOS and macOS app versions. * Visit patchstorage.com/platform/mirack for inspiration and to share your patches.
Screenshots
Verdict
The clearest difference is price: AUFX at $4.99 against miRack's $14.99. AUFX also leads on in-app purchases (none vs 5) and iOS requirement (9.0 vs 14.0). miRack's advantage is rating (4.8 vs 4.3) and update cadence (weekly vs every 5 months). On ads and device support 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
AUFX costs $4.99 and miRack $14.99 up front. miRack sells 5 one-off in-app purchases. AUFX asks for nothing beyond the download.
miRack holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: miRack has 674 ratings behind it against 32, so its average is the more settled of the two. Written reviews point the same way: 66% of AUFX's written reviews are positive against 86% of miRack's.
AUFX ships an update every 5 months, miRack weekly. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.
| Parameter | AUFX | miRack |
|---|---|---|
| Price | $4.99 — better | $14.99 |
| Rating | 4.3 (32 ratings) | 4.8 (674 ratings) — better |
| Positive reviews | 65.8% of reviews | 85.9% of reviews — better |
| Number of ratings | 32 | 674 — better |
| Update frequency | Every 5 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 9.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 5 MB | 359 MB |
| Age rating | 4+ | 4+ |
| Developer | Kymatica AB | MIFKI PTY LTD |
Customer experience
AUFX
miRack
Bugs and requests
AUFX
Not enough reviews yet to summarise bugs or requests.
miRack
Reported bugs
3 issues- Knob controls sometimes become unresponsive
- Saving and loading patches can be unreliable
- Compatibility issues with older iPad models
Requested features
5 requests- Add polyphonic support
- Implement undo/redo functionality
- Integrate with popular DAWs and audio apps
- Provide more comprehensive module library
- Add preset management and sharing options
In-app purchases
AUFX
No in-app purchases
miRack
- Small Tip$0.99
- Medium Tip$2.99
- Large Tip$4.99
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- AUv3 Hosting Modules$4.99
- Controller Module$4.99









