# AU3FX:PeakQ — AUv3 equalizer

> AUv3 parametric stereo equalizer plugin for iOS music production. (iPhone/iPad app by Kymatica AB.)

- Source: https://appshunter.io/ios/app/au3fxpeakq/id1597768353 (this page in markdown: same URL + `.md`)
- Developer: [Kymatica AB](https://appshunter.io/developer/522046659)
- Category: Music
- Price: $4.99
- Rating: 4.60/5 from 10 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 2 MB
- Languages: American English
- Released: 2022-02-01
- Data updated: 2026-09-06
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/au3fxpeakq/id1597768353/reviews.md

## What is AU3FX?

A versatile 4-band parametric stereo equalizer AUv3 plugin for everything between subtle frequency enhancements to agressive boosting/cutting or special resonator effects.

This app is part of the AU3FX series, a collection of simple and powerful audio unit effect plugins.

• High quality 32-bit DSP engine. 
• Two parametric peak filters with gain, frequency and Q.
• Low-shelf filter with gain and frequency.
• High-shelf filter with gain and frequency.
• On/Off toggle for each band.
• Interactive frequency response curve with draggable handles.
• Real-time FFT spectrum analyzer with pre/post/off switch.
• 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).

The container app shows the Users Guide. Load the AU3FX:PeakQ inside any music app that supports hosting Audio Unit Extensions to use the plugin.

## Key features

- 4-band parametric stereo equalizer
- High quality 32-bit DSP engine
- Interactive frequency response curve
- Real-time FFT spectrum analyzer
- Bundled presets and user preset saving
- Multiple instances and external control

## Chart rankings

- #179 in Top Paid · Music (US App Store)

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/au3fxpeakq/id1597768353/reviews.md

### 5/5 — Finally!

*2022-09-12*

Now the whole set of Kymatica audio processors is AUV3. Kymatica apps are indispensable for iOS music making.

### 5/5 — Kymatica is a pillar of the iOS music production format, another gem!

*2022-02-04*

I started using iOS music production apps for my home recordings in 2015. Jonatan’s apps were already must haves (Audio Share, the original IAA AUFX effects, etc). These classics being reintroduced with AUV3 functionality is a must buy for any musician or producer working with iPad music apps. Thank you Jonathan!

## Frequently asked questions about AU3FX

### What is AU3FX:PeakQ?

AU3FX:PeakQ is a 4-band parametric stereo equalizer AUv3 plugin for iOS. It allows for detailed frequency adjustments, from subtle enhancements to aggressive shaping, and includes a real-time spectrum analyzer.

### How do I use AU3FX:PeakQ?

You load AU3FX:PeakQ inside any music app on iOS that supports hosting Audio Unit Extensions (AUv3). The container app provides a user guide for setup and operation.

### What devices does AU3FX:PeakQ support?

AU3FX:PeakQ is compatible with iPhone, iPad, and iPod touch devices.

### What is the price of AU3FX:PeakQ?

AU3FX:PeakQ is a paid application, available for $4.99.

### Does AU3FX:PeakQ have ads?

No, AU3FX:PeakQ does not contain advertisements. It is a standalone paid plugin.

### How often is AU3FX:PeakQ updated?

AU3FX:PeakQ was last updated on February 1, 2022, with version 1.0. Further updates will depend on developer plans.

### What is the age rating for AU3FX:PeakQ?

AU3FX:PeakQ has an age rating of 4+, making it suitable for a wide range of users.

### Can I save my EQ settings with AU3FX:PeakQ?

Yes, you can save and load session states within your host application. User presets are also shared across hosts on iOS 13 and later.

## Version history (last 1 release)

### 1.0 — 2022-02-01

No release notes.

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## More apps by Kymatica AB

- [AudioShare](https://appshunter.io/ios/app/audioshare/id543859300)
- [SECTOR](https://appshunter.io/ios/app/sector/id618095247)
- [The Oscillator](https://appshunter.io/ios/app/the-oscillator/id640819682)
- [AUFX:Space](https://appshunter.io/ios/app/aufxspace/id665650685)
- [AUFX:Dub](https://appshunter.io/ios/app/aufxdub/id678982701)
- [AUFX:PeakQ](https://appshunter.io/ios/app/aufxpeakq/id781852954)

All apps by Kymatica AB: https://appshunter.io/developer/522046659

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-06.*