iOS Musician Apps (298) Supported Technologies is Audio Unit (AU), Type is Effect

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

Price $29.99
Author Future Moments
Type Effect
Effect type Equalizer, Filter, Compressor, Limiter, Gate, Other
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.66151 (647), current: 4.66151 (647)
Released 06/13/2017
Updated 07/23/2025

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

Price Free
Author Future Moments
Type Effect
Effect type All-in-one, Other
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.49857 (2441), current: 4.49857 (2441)
Released 07/14/2016
Updated 07/23/2025

apeFilter is a sophisticated Equaliser, the DSP is based on the Biquad/Cascade filters, very fast!

Price $7.99
Author apeSoft
Type Effect
Effect type Equalizer, Filter
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.84848 (33), current: 4.84848 (33)
Released 09/30/2014
Updated 07/22/2025

Echo effect Audio Unit V3 inspired by the mayan pyramids acoustic echo. I come up with a complex phase modulated frequency of the echo so you can change it’s frequency signature. It is kind of changing the material of the reflective surface and I called it “Stone F”.

Price $2.99
Author Aleksandar Mlazev
Type Effect
Effect type Reverb, Delay, Echo
Supports Audio Unit (AU)
Rating total: 2.75 (4), current: 2.75 (4)
Released 03/02/2018
Updated 07/22/2025

This is NOT a digital reproduction of vintage gear or old crappy distortion algorithm. Fat Lady is completely new approach to the guitar sound.

Price $2.99
Author Aleksandar Mlazev
Type Effect
Effect type Distortion, Drive etc., Guitar effects
Supports Audio Unit (AU)
Released 08/24/2017
Updated 07/16/2025

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

Tape Pro is a multi-fx tape emulation AUv3 plugin and app that introduces warmth, frequency shaping, modulation, noise and delay.

Price $7.99
Author Caelum Audio
Type Effect
Effect type Equalizer, Filter, Other
Supports Audio Unit (AU)
Rating total: 4.78571 (14), current: 4.78571 (14)
Released 10/30/2020
Updated 12/17/2022

Schlap is a characterful, colourful and aggressive sounding program-dependent AUv3, IAA & standalone compressor.

Price $4.99
Author Caelum Audio
Type Effect
Effect type Compressor, Limiter, Gate
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.94118 (17), current: 4.94118 (17)
Released 12/31/2020
Updated 11/04/2022

Smoov is a soft, clean and transparent sounding program-dependent AUv3, IAA & standalone compressor.

Price $4.99
Author Caelum Audio
Type Effect
Effect type Compressor, Limiter, Gate
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.85714 (7), current: 4.85714 (7)
Released 02/12/2021
Updated 11/04/2022

Beef is a multi-effect audio plugin with a sole purpose, to make your tracks sound BEEFY. Beef was originally built to focus on creating the fattest basses and drums as possible.

Price $7.99
Author Caelum Audio
Type Effect
Effect type Bass effects
Supports Audio Unit (AU)
Rating total: 4.57143 (21), current: 4.57143 (21)
Released 04/30/2021
Updated 09/13/2022

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: 4.85714 (7), current: 4.85714 (7)
Released 05/03/2020
Updated 06/20/2024

The Wood'nGate is an audio gate which is both a standalone app supporting IAA (Inter-App Audio) and an AUv3 audio unit plugin.

Price $7.99
Author Woodman's Immaculate Maple Syrup Studio
Type Effect
Effect type Compressor, Limiter, Gate
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 5 (6), current: 5 (6)
Released 09/17/2018
Updated 12/18/2024

Woodpressor is a high-end audio compressor. It is both a standalone app supporting IAA (Inter-App Audio) and an AUv3 audio unit plugin.

Price $9.99
Author Woodman's Immaculate Maple Syrup Studio
Type Effect
Effect type Compressor, Limiter, Gate
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 5 (3), current: 5 (3)
Released 08/02/2018
Updated 04/18/2023

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

Kompresor is a versatile and powerful, yet easy to use, compressor.

Price $24.99
Author Shattered Glass Audio
Type Effect
Effect type Compressor, Limiter, Gate
Supports Audio Unit (AU)
Rating total: 5 (3), current: 5 (3)
Released 09/07/2021
Updated 04/02/2025

Mammoth is a bass plugin featuring two-band signal processing that includes a bass maximizer, 3 types of drive, a tone stack, cabinet simulations and much more.

Price $7.99
Author Aurora DSP
Type Effect
Effect type Bass effects
Supports Audio Unit (AU)
Rating total: 4.76471 (17), current: 4.76471 (17)
Released 06/16/2020
Updated 07/17/2024

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
Author FabFilter
Type Effect
Effect type Equalizer, Filter, Distortion, Drive etc., Guitar effects
Supports Audio Unit (AU)
Rating total: 4.90625 (32), current: 4.90625 (32)
Released 06/25/2020
Updated 12/20/2023

FabFilter Pro-DS is a professional de-essing plug-in. With its 'Single Vocal' detection algorithm, it attenuates sibilance in vocal recordings.

Price $29.99
Author FabFilter
Type Effect
Effect type Vocal effects
Supports Audio Unit (AU)
Rating total: 4.92856 (14), current: 4.92856 (14)
Released 06/21/2019
Updated 12/20/2023

FabFilter Timeless 3 is a versatile, vintage-sounding tape delay, which will fully satisfy your everyday delay needs.

Price $24.99
Author FabFilter
Type Effect
Effect type Reverb, Delay, Echo
Supports Audio Unit (AU)
Rating total: 5 (27), current: 5 (27)
Released 05/27/2021
Updated 12/19/2023

FabFilter Pro-L 2 is a feature-packed true peak limiter, suitable for transparent mastering as well as single instrument limiting.

Price $39.99
Author FabFilter
Type Effect
Effect type Compressor, Limiter, Gate
Supports Audio Unit (AU)
Rating total: 4.89473 (19), current: 4.89473 (19)
Released 06/21/2019
Updated 12/20/2023