iOS Musician Apps (292) Supported Technologies is Audio Unit (AU), Type is Effect

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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

Knorr is a plugin that adds intensity and edge to a monophonic low frequency audio source (like a bass). The algorithm adds overtones to an existing sound in a way that isn’t possible with ordinary distortion or filtering.

Price $8.99
Author Klevgränd produkter AB
Type Effect
Effect type Equalizer, Filter, Other
Supports Audio Unit (AU)
Rating total: 4.33333 (6), current: 4.33333 (6)
Released 10/14/2019
Updated 10/15/2019

ToneBoosters Barricade is a peak limiter and compressor.

Price $8.99
Author ToneBoosters
Type Effect
Effect type Compressor, Limiter, Gate
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.7931 (29), current: 4.7931 (29)
Released 09/17/2019
Updated 05/26/2026

Visual Compressor is a 4 band compressor/expander which has the ability to analyse audio in real time giving an accurate and reliable spectrum representation of your signal as well as visual feedback of compression or expansion levels.  It's uses range from final mastering of songs to dynamic manipulation and EQing of drum tracks.

Price $8.99
Author 4Pockets.com
Type Effect
Effect type Compressor, Limiter, Gate
Supports Audio Unit (AU)
Rating total: 5 (2), current: 5 (2)
Released 08/13/2019
Updated 09/03/2025

ToneBoosters Reverb is a studio-quality reverberation plug-in.

Price $8.99
Author ToneBoosters
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.77778 (54), current: 4.77778 (54)
Released 08/13/2019
Updated 05/30/2026

Visual EQ Console is a multi-band EQ console with the ability to analyse audio in real time giving a spectrum representation of the frequency response. 

Price $8.99
Author 4Pockets.com
Type Effect
Effect type Equalizer, Filter
Supports Audio Unit (AU)
Rating total: 4.14286 (21), current: 4.14286 (21)
Released 06/23/2019
Updated 09/03/2025

Harmonic Exciter is an AUv3 Compatible plugin for your favourite DAW such as Cubasis, Auria, AUM, Meteor, BM3 or GarageBand etc.

Price $8.99
Author 4Pockets.com
Type Effect
Effect type Other
Supports Audio Unit (AU)
Rating total: 3.375 (8), current: 3.375 (8)
Released 04/09/2019
Updated 09/04/2025

The WoodLofier is both a standalone app and AUv3 plugin which combines 4 different sections to make your sound more lofi or to add some creative twist  : filtering (and Sample Rate reduction), a Tape wobble unit, Noise addition and Crushing (clipping, bit reduction and saturation).

Price $8.99
Author Woodman's Immaculate Maple Syrup Studio
Type Effect
Effect type Distortion, Drive etc., Other
Supports Audio Unit (AU)
Rating total: 5 (6), current: 5 (6)
Released 02/14/2019
Updated 10/12/2024

Discord4 is the latest version of our most popular and long-lived product, our Discord stereo pitch shifter. Originally modeled from the H910, Discord has long since become its own effect and a studio standby, and this version includes major additions to further stretch its capabilities.

Price $8.99
Author Audio Damage, Inc.
Type Effect
Effect type Reverb, Delay, Echo, Pitch effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.68966 (29), current: 4.68966 (29)
Released 02/24/2018
Updated 10/09/2019

BTS FX emerges as a dynamic multi-effect plugin, incorporating a diverse set of modules.

Price $9.99
Author Dmytro Kiro
Type Effect
Effect type Distortion, Drive etc.
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 5 (3), current: 5 (3)
Released 03/20/2024
Updated 03/22/2024

Steel Guitar PRO is a guitar processor that combines cutting-edge realtime audio generation with control interface. It provides guitar models, built-in amps & FX processing, MIDI control, AUv3, and good customizability.

Price $9.99
Author Yonac Inc.
Type Effect
Effect type Guitar effects
Supports Audio Unit (AU)
Rating total: 4.53731 (67), current: 4.53731 (67)
Released 06/23/2022
Updated 07/08/2022

Every now and then, a new classic is born, they come in the shape of a revisited classic or a whole new world with monster tone and myriads of options, with its 3 distinctly voiced channels morphing past, present and future tones.

Price $19.99 $9.99
Author Nembrini Audio
Type Effect
Effect type Distortion, Drive etc., Guitar effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 5 (8), current: 5 (8)
Released 08/30/2021
Updated 09/24/2021

SideBand Remix is an AUv3 plugin for final mixing and mastering. It separates the phantom center from sideband (L/R) content which is what give a stereo track its width, and lets you remix it.

Price $9.99
Author 4Pockets.com
Type Effect
Effect type Equalizer, Filter, Other
Supports Audio Unit (AU)
Rating total: 4.66667 (6), current: 4.66667 (6)
Released 07/19/2021
Updated 12/13/2025

Voice DC30 Custom Valve Guitar Amplifier plugin is characterised by it's "jangly" high-end sound it has become widely recognized by British musicians and others.

Price $19.99 $9.99
Author Nembrini Audio
Type Effect
Effect type Guitar effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 5 (7), current: 5 (7)
Released 03/14/2021
Updated 09/27/2021

ToneStack PRO is a guitar effects processor.

Price $9.99
Author Yonac Inc.
Type Effect
Effect type Guitar effects
Supports Audio Unit (AU)
Rating total: 4.24138 (87), current: 4.24138 (87)
Released 04/26/2021
Updated 05/12/2025

TalkWorks is an AUv3 plugin designed to give any sound a human vocal like quality by simulating vowel sounds found in human speech.

Price $9.99
Author 4Pockets.com
Type Effect
Effect type Vocal effects
Supports Audio Unit (AU)
Rating total: 4 (6), current: 4 (6)
Released 01/24/2021
Updated 09/01/2025

The Blackice Beta Gamma Bass Amplifier plugin based on modern-classic 900 watt bass guitar head and complete it with a virtual recording chain.

Price $19.99 $9.99
Author Nembrini Audio
Type Effect
Effect type Bass effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.66667 (9), current: 4.66667 (9)
Released 01/08/2021
Updated 09/27/2021

Drum surgeon is a dynamics / transient processor specifically designed for fine tuning your drums.

Price $9.99
Author 4Pockets.com
Type Effect
Effect type Other
Supports Audio Unit (AU)
Rating total: 4.55556 (9), current: 4.55556 (9)
Released 11/20/2020
Updated 09/03/2025

The Cali Dual Three Channels Guitar Amplifier 100 watt head can be driven from the most pristine clean sounds to incredible crushing wall of gain. Since the 90s it defined the sound of modern rock and metal with his distinctive liquid lead sounds.

Price $19.99 $9.99
Author Nembrini Audio
Type Effect
Effect type Guitar effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 5 (6), current: 5 (6)
Released 10/30/2020
Updated 09/27/2021

The Sound Master Custom Tube Guitar Amplifier plugin is born to reproduce in your virtual rig the classic American guitar amplifier sounds.

Price $19.99 $9.99
Author Nembrini Audio
Type Effect
Effect type Distortion, Drive etc., Guitar effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.86667 (15), current: 4.86667 (15)
Released 06/30/2020
Updated 09/27/2021