Audio Unit (AU) Equalizer, Filter Apps (64)

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Audio Unit (AU) technology enabled Equalizer, Filter effect app list for iOS

FabFilter Saturn 2 is a high-quality distortion/saturation plug-in with a huge range of distortion models ranging from subtle to screaming vintage amp modelling, multiple frequency bands, hugely flexible modulation system, and a very modern, well-designed user interface.

Price $24.99 $17.99
Author FabFilter
Type Effect
Effect type Equalizer, Filter, Distortion, Drive etc., Guitar effects
Supports Audio Unit (AU)
Rating total: 4.90909 (33), current: 4.90909 (33)
Released 06/25/2020
Updated 12/20/2023

FabFilter Pro-MB is a multiband dynamics plug-in featuring an optimized workflow: up to six compression/expansion bands can be placed freely anywhere in the spectrum.

Price $39.99 $29.99
Author FabFilter
Type Effect
Effect type Equalizer, Filter
Supports Audio Unit (AU)
Rating total: 4.7619 (21), current: 4.7619 (21)
Released 06/21/2019
Updated 12/20/2023

Analog Rack Bass Equalizer 7 bands graphic eq plugin with selected frequency bands for bass guitar.

Price $2.99
Author Nembrini Audio
Effect type Equalizer, Filter, Bass effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 5 (5), current: 5 (5)
Released 02/08/2020
Updated 09/27/2021

Analog Rack Guitar Equalizer a 7 bands graphic eq plugin especially tuned for guitar, inspired by the compact Japanese eq pedal.

Price $2.99
Author Nembrini Audio
Type Effect
Effect type Equalizer, Filter, Guitar effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 5 (9), current: 5 (9)
Released 02/08/2020
Updated 09/27/2021

Import audio and instantly get a mastered version. Immediately hear a boost in volume and overall sweetening of the mix.

Price $99.99
Author Future Moments
Type Effect
Effect type Equalizer, Filter, Compressor, Limiter, Gate, Other
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.66565 (658), current: 4.66565 (658)
Released 06/13/2017
Updated 06/01/2026

Dual VCF adds motion, shape, and colour. It produces evolving rhythmic movement and complex dynamic filter shapes.

Price $4.99
Author ToneBoosters
Type Effect
Effect type Equalizer, Filter
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.94444 (18), current: 4.94444 (18)
Released 04/01/2020
Updated 05/30/2026

ToneBoosters Morphit is an AUv3 plugin for headphones correction and simulation and removes any unwanted coloration from your headphones!

Price $8.99
Author ToneBoosters
Type Effect
Effect type Equalizer, Filter, Other
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.64516 (31), current: 4.64516 (31)
Released 11/16/2019
Updated 05/28/2026

ToneBoosters Equalizer is a dynamic equalizer plug-in.

Price $9.99
Author ToneBoosters
Type Effect
Effect type Equalizer, Filter
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.63636 (66), current: 4.63636 (66)
Released 07/30/2019
Updated 05/28/2026

Traditional EQs influence the spectrum of the whole stereo field simultaneously. DirectionalEQ takes this concept one big step further: now you can equalize all directions in the stereo field independently.

Price $9.99
Author Christian Siedschlag
Type Effect
Effect type Equalizer, Filter
Supports Audio Unit (AU)
Rating total: 3.64286 (14), current: 3.64286 (14)
Released 10/27/2017
Updated 01/02/2026

The 6144 is an Audio Unit equalizer which aims to recreate the legendary sound of the Neve hardware EQs.

Price $9.99
Author Christian Siedschlag
Type Effect
Effect type Equalizer, Filter
Supports Audio Unit (AU)
Rating total: 4.29412 (34), current: 4.29412 (34)
Released 07/18/2016
Updated 12/15/2025

Eventide Crystals Harmonizer® combines twin reverse pitch shifters with reverse delays and reverb. This iconic H3000 effect can be used to create out-of-this-world climbing and cascading pitched delays or to create unique sounding reverbs. It features two reverse granular delays that can be manipulated by length and pitch.

Price $7.99
Author Eventide
Type Effect
Effect type Equalizer, Filter, Reverb, Delay, Echo, Pitch effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.59999 (20), current: 4.59999 (20)
Released 06/08/2020
Updated 03/06/2024

DOTEC-AUDIO presents DeePopMax, a big hit“Loudness Maximizer" for MacOS, now available for iOS, including AudioUnit V3 support.

Price $7.99
Author fmfmsoft Corp.
Type Effect
Effect type Equalizer, Filter, Compressor, Limiter, Gate, Other
Supports Audio Unit (AU)
Rating total: 5 (2), current: 5 (2)
Released 08/31/2020
Updated 04/03/2026

DOTEC-AUDIO presents DeeEQ, as a popular "Equalizer" for MacOS, now available for iOS, including AudioUnit V3 support.

Price $7.99
Author fmfmsoft Corp.
Type Effect
Effect type Equalizer, Filter
Supports Audio Unit (AU)
Rating total: 5 (2), current: 5 (2)
Released 08/31/2020
Updated 11/29/2024

ChannelStrip is, as its name implies, a channel strip app and AUv3 plugin. With a gate, equalizer, and compressor, ChannelStrip can provide a solid and easy-to-use channel control for your iOS mixing needs.

Price $3.99
Author Audio Damage, Inc.
Type Effect
Effect type Equalizer, Filter, Compressor, Limiter, Gate
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 5 (3), current: 5 (3)
Released 05/01/2019
Updated 09/27/2024

FD-1 is a Semi-Modular Effect Plugin including dedicated Filter, Delay and Modulation sections.

Price $9.99
Author Kai Aras
Type Effect
Effect type Equalizer, Filter, Reverb, Delay, Echo, Modulation effects
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.625 (32), current: 4.625 (32)
Released 11/07/2019
Updated 09/24/2020

FabFilter Pro-Q 3 is an EQ plug-in with up to 24 bands, analog modeling, dynamic EQ, linear phase processing.

Price $29.99
Author FabFilter
Type Effect
Effect type Equalizer, Filter
Supports Audio Unit (AU)
Rating total: 4.74468 (47), current: 4.74468 (47)
Released 06/21/2019
Updated 03/23/2026

This app is a music player that can process the following effects in real time: Time stretch (0.5-2.0 double speed), Pitch shift (-1 ~ +1 octave), 10 band equalizer.

Price $0.99
Author Loop-Sessions.LLC.
Type Effect
Effect type Equalizer, Filter, Pitch effects
Supports Audio Unit (AU)
Rating total: 3.8 (25), current: 3.8 (25)
Released 11/15/2013
Updated 03/22/2026

If you play a musical instrument or sing a song, this app should be supported by you higher / lower the pitch.

Price Free
Author Loop-Sessions.LLC.
Type Effect
Effect type Equalizer, Filter, Pitch effects
Supports Audio Unit (AU)
Rating total: 4.40963 (83), current: 4.40963 (83)
Released 07/16/2013
Updated 03/22/2026

BLEASS Motion EQ is a 3-band equalizer with multi-outs and 2 LFOs.

Price $6.99
Author BLEASS
Type Effect
Effect type Equalizer, Filter
Supports Audiobus, Audio Unit (AU)
Rating total: 4.96296 (27), current: 4.96296 (27)
Released 12/14/2020
Updated 06/02/2022

A simple but fast low-pass filter with control over cutoff frequency and resonance factor.

Price $0.99
Author Brad Howes
Type Effect
Effect type Equalizer, Filter
Supports Audio Unit (AU)
Released 02/15/2021
Updated 02/27/2026
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Did you know?

Audio Units (AU) is an audio plug-in technology built in Apple's macOS and iOS operating systems. Initially developed for desktop operating systems along with VST (Virtual Studio Technology by Steinberg GmbH), it available now for iOS too. AU apps (plug-ins) can modify sound pitch, sample rate and stream over network, produce signal.