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

This app is part of the AUFX series, a collection of simple and powerful audio effect apps.

• 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.
• Displays the resulting frequency response graph in real-time.
• Real-time FFT spectrum analyzer with pre/post/off switch.
• Process hardware input/output.
• Process 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.
• Built-in lookahead limiter to prevent clipping.
• 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.

What’s New

Version 1.2.4

Removed the IAA switcher panel, since using this sometimes crashed iOS system processes, rebooting the device! (Sudden black screen with spinning wheel). Also updated to Audiobus SDK 3.

Ratings and Reviews

4.5 out of 5
24 Ratings

24 Ratings

theLateWizard ,

A must have

These apps have taken my iPad production to the next level. Buy the bundle, it is a must have as it will augment all of your current music apps.

Figuring out how to use them can be a little daunting, I recommend just playing with one at a time against a sound you already know well so you get an idea of what each one does

Clive Luis ,

Auv3 version will make this unbeatable!

Im rating this four stars only because its 2017 and Auv3 is gaining prominence.
I hope an update is forthcoming . .. at least for Push and Peakq ..the best of the AUFX lot
As far as EQ , IOS and simplicity goes , peakq is as good as it gets. ZMors eq is the only other one I can think of.. but it does not have a spectrum analyzer .. ...for that feature alone you need to lap up this app!!!

Developer Response ,

AUv3 versions for all AUFX apps are planned!

AiNo99 ,

No difference sound with app open or close

I was excited to hear the sound from this app but this app just didn't make any sound difference if the app is open or close. Tried install the app couple time and made no difference. I tried to load preset EQ and adjust the setting but make no difference in sound. Tried with/without headphone and still same issue. My phone have the latest iSO 9.2.1 version. Wasted 5 buck.


Kymatica AB
5.1 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like