Audio Unit (AU) Modulation Effect Apps (19)

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Audio Unit (AU) technology enabled Modulation Effect app list for iOS

Modley is a modulation delay with effect insert capabilities, which lets you design the whole delay signal with several carefully selected effect modules, to create customized signal flows and unique sounds.

Price $15.95 $6.39
Author Klevgränd produkter AB
Type Effect
Effect type Reverb, Delay, Echo, Modulation effects
Supports Audio Unit (AU)
Rating total: 4.9 (20), current: 4.9 (20)
Released 06/18/2019
Updated 02/25/2021

Spinn is a 4 band rotating modulation effect. It’s a bit similar to a Leslie but not aiming to replicate this character. 4 rotors with individual speed controls, acceleration and deceleration times, adjustable size and modulation.

Price $14.99 $5.99
Author Klevgränd produkter AB
Type Effect
Effect type Modulation effects
Supports Audio Unit (AU)
Rating total: 4.5 (4), current: 4.5 (4)
Released 05/18/2020
Updated 09/17/2021

Undulator is Eventide’s classic modulated tremolo effect from the iconic H3000 effects processor.

Price $7.99
Author Eventide
Type Effect
Effect type Modulation effects, Pitch effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4 (8), current: 4 (8)
Released 07/13/2020
Updated 03/06/2024

Rotary is a rotating cabinet effect that simulates a Leslie speaker. It produces a pulse-like vibrato effect depending on the speed of rotation.

Price $7.99
Author Eventide
Type Effect
Effect type Modulation effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.2381 (21), current: 4.2381 (21)
Released 10/09/2019
Updated 03/06/2024

BLEASS filter is an essential tool for musicians: inspired by classic analog filters, it features an envelope follower as well as a LFO and a warm sound which create mind boggling filter sweep effects on any sound source: guitars, vocals, keyboards, drums ...

Price $3.99
Author BLEASS
Type Effect
Effect type Equalizer, Filter, Modulation effects
Supports Audiobus, Audio Unit (AU)
Rating total: 5 (17), current: 5 (17)
Released 06/20/2019
Updated 05/19/2022

Electrogene is a low fidelity audio effect combining bit-crusher, modulation, saturation and filter with scope visualizer.

Price $4.99
Author BACKPULLVER SOFTWARE LTD OOD
Type Effect
Effect type Equalizer, Filter, Distortion, Drive etc., Modulation effects
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.76923 (13), current: 4.76923 (13)
Released 11/05/2018
Updated 02/19/2024

RM-1 is a multi purpose audio effect designed around various types of modulation.

Price $9.99
Author Kai Aras
Type Effect
Effect type Modulation effects
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.76471 (17), current: 4.76471 (17)
Released 12/15/2018
Updated 08/31/2020

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: 4.72414 (29), current: 4.72414 (29)
Released 11/07/2019
Updated 09/24/2020

BLEASS Motion FX contains 11 different effects which you can modulate precisely thanks to an intuitive and comprehensive sequencer.

Price $7.99
Author BLEASS
Type Effect
Effect type Equalizer, Filter, Reverb, Delay, Echo, Modulation effects, Pitch effects, Other
Supports Audio Unit (AU)
Rating total: 4.81818 (11), current: 4.81818 (11)
Released 03/21/2021

WoodScaper combines into one unit the 4 classic guitar effects : phaser, chorus/flanger, wah-wah and tremelo.

Price $9.99
Author Woodman's Immaculate Maple Syrup Studio
Type Effect
Effect type Chorus, Flanger, Phaser etc., Modulation effects, Pitch effects, Guitar effects
Supports Audio Unit (AU)
Rating total: 4.66667 (3), current: 4.66667 (3)
Released 05/03/2020
Updated 10/22/2023

Alien Box is LFO operated modulation effect.

Price $2.99
Author Aleksandar Mlazev
Type Effect
Effect type Reverb, Delay, Echo, Compressor, Limiter, Gate, Modulation effects, Other
Supports Audio Unit (AU)
Released 05/31/2017
Updated 08/10/2023

NeSi xTrem is a stereo-stereo tremolo effect that uses FM based LFO's and includes VCA and low-pass gate based modulation of the audio signal volume.

Price Free
Author Neon Silicon
Effect type Equalizer, Filter, Modulation effects
Supports Audio Unit (AU)
Rating total: 4.73332 (15), current: 4.73332 (15)
Released 02/16/2021
Updated 05/27/2022

This is an AUv3 compatible Uni-Vibe style plugin which can be used as a plugin with your favourite DAW such as Cubasis, Auria, Meteor or GarageBand.

Price $7.99
Author 4Pockets.com
Type Effect
Effect type Modulation effects
Supports Audio Unit (AU)
Rating total: 3.66667 (3), current: 3.66667 (3)
Released 08/23/2018
Updated 05/03/2022

Alien Box is a new kind of audio effect that you have never heard before.

Price $2.99
Author Aleksandar Mlazev
Type Effect
Effect type Reverb, Delay, Echo, Compressor, Limiter, Gate, Modulation effects, Other
Supports Audio Unit (AU)
Rating total: 1.33333 (3), current: 1.33333 (3)
Released 05/16/2017
Updated 10/30/2021

FS Refraktor is an innovative twist on modulation effects, inspiring the exploration of new sonic territory. Sitting somewhere between a delay and a flanger, FS Refraktor offers endless possibilities, from rhythmic flanging to chaotic pitch modulation and unpredictable stuttering.

Price $6.99
Author FutureSonic Ltd
Type Effect
Effect type Reverb, Delay, Echo, Chorus, Flanger, Phaser etc., Modulation effects, Other
Supports Audio Unit (AU)
Rating total: 4.2 (5), current: 4.2 (5)
Released 03/09/2018
Updated 09/17/2021

GyroVibe evokes the sound and textures of a classic vibrato chorus. It also contains multi-stage driven filters that will swirl and swoosh your instrument all over the stereo field. GyroVibe is perfect for adding depth and color to keyboards.

Price Free
Author Neon Silicon
Type Effect
Effect type Equalizer, Filter, Modulation effects
Supports Audio Unit (AU)
Rating total: 4.57143 (28), current: 4.57143 (28)
Released 05/02/2019
Updated 04/13/2021

Classic vibrato and chorus effect.

Price $1.99
Author Aleksandar Mlazev
Type Effect
Effect type Chorus, Flanger, Phaser etc., Modulation effects, Pitch effects
Supports Audio Unit (AU)
Rating total: 4 (5), current: 4 (5)
Released 06/29/2017
Updated 09/18/2020

This Auto Wah can perform many different filtering effects but it's main purpose is to simulate a traditional WahWah pedal such as those used by guitarists.

Price $4.99
Author 4Pockets.com
Type Effect
Effect type Modulation effects
Supports Audio Unit (AU)
Rating total: 4.25 (4), current: 4.25 (4)
Released 09/12/2018
Updated 02/08/2019

Svep is a stereo modulation filter effect suitable for any sound. Tweak it to produce anything from old-school phasers to subtle choruses.

Price Free
Author Klevgränd produkter AB
Type Effect
Effect type Chorus, Flanger, Phaser etc., Modulation effects
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.2 (15), current: 4.2 (15)
Released 11/27/2014
Updated 03/02/2017
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.