iOS Musician Apps (555) Supported Technologies is Audio Unit (AU)

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Time Machine is a plugin that allows you to go back to the days of vinyl and tube amplification. 

Price $9.99
Author 4Pockets.com
Type Effect
Effect type Other
Supports Audio Unit (AU)
Rating total: 4.21429 (14), current: 4.21429 (14)
Released 07/24/2019
Updated 09/01/2025

BeatCutter is an experimental multi-channel app for slicing and recombining sound based on rhythm.

Price $15.99
Author Igor Vasiliev
Type Effect, Tool
Effect type Other
Supports Audiobus, Audio Unit (AU)
Rating total: 4.48386 (31), current: 4.48386 (31)
Released 04/02/2021
Updated 03/26/2026

With the special lightweight version of SynthScaper LE you can easily create and modify your own multi-timbral pads and atmospheric soundscapes.

Price $4.99
Author Igor Vasiliev
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.70833 (24), current: 4.70833 (24)
Released 01/21/2019
Updated 06/19/2020

VintageRack is a multi-effect application that contains modules modeling notable retro gear from the early digital era.

Price $14.99
Author Igor Vasiliev
Type Effect
Effect type All-in-one
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 5 (7), current: 5 (7)
Released 09/21/2022
Updated 03/16/2026

SoundSaw is a complex sound processing app with easy-to-use controls designed to distort the sound of musical instruments or voice, and give the sound the aesthetics and atmosphere of noise, lo-fi, chiptune and experimental music scene.

Price $5.99
Author Igor Vasiliev
Type Effect
Effect type Distortion, Drive etc., Other
Supports Audiobus, Audio Unit (AU)
Rating total: 4.92856 (14), current: 4.92856 (14)
Released 07/19/2021
Updated 08/16/2022

This synthesizer offers a brand new way of finding the optimal sound.

Price $1.99
Author Klevgränd produkter AB
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audio Unit (AU)
Rating total: 3.72222 (18), current: 3.72222 (18)
Released 08/31/2017
Updated 02/06/2025

This AUv3 plugin effect is a complex spectral saturation processor simulating a set of different analog gear in a new and unique way.

Price $19.99
Author Klevgränd produkter AB
Type Effect
Effect type Guitar effects, Other
Supports Audio Unit (AU)
Rating total: 5 (18), current: 5 (18)
Released 12/04/2018
Updated 09/17/2021

This is a natural sounding reverb audio effect.

Price $1.99
Author Aleksandar Mlazev
Type Effect
Effect type Reverb, Delay, Echo
Supports Audio Unit (AU)
Released 01/16/2019
Updated 08/09/2026

Matrix Vocoder transforms your voice into an electronic instrument.

Price $5.99
Author Harry Gohs
Type Effect
Effect type Vocoder
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.21053 (19), current: 4.21053 (19)
Released 09/26/2019
Updated 08/07/2026

VS provides a creative way to generate beautiful graphical representations of your music projects. Driven by both audio and MIDI data, VS is the visual equivalent of a traditional synthesizer.

Price $24.99
Author Imaginando Lda
Type Tool
Supports Audiobus, Audio Unit (AU)
Rating total: 4.59999 (125), current: 4.59999 (125)
Released 06/14/2021
Updated 11/27/2025

NFM is an intuitive FM synthesizer with a streamlined interface.

Price $4.99
Author Nikolozi Meladze
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audio Unit (AU)
Rating total: 4.91176 (34), current: 4.91176 (34)
Released 07/29/2017
Updated 04/23/2025

At the heart of SynthMaster 2’s powerful sound engine lies its oscillators, modulators, and filters.

Price $14.99
Author KV331 Audio
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audio Unit (AU)
Rating total: 4.75949 (474), current: 4.75949 (474)
Released 06/22/2021
Updated 06/03/2026

A simple free music player that allows you to play music files while playing effectors that support Audio Units Extension (AUv3 plugin) format.

Price Free
Author fmfmsoft Corp.
Type Host, Tool
Instrument type Sampler
Supports Audio Unit (AU)
Rating total: 4.23076 (13), current: 4.23076 (13)
Released 08/31/2020
Updated 08/01/2026

SynthMaster One iOS is the mobile version of KV331 Audio's SynthMaster One software synthesizer.

Price $9.99
Author KV331 Audio
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.69717 (743), current: 4.69717 (743)
Released 06/27/2018
Updated 12/29/2024

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

rejected, macDeeTrim is a simple plugin which controls the volume from -12dB to +3dB. It can keep the output level constant from any input level.

Price $7.99
Author fmfmsoft Corp.
Type Effect
Effect type Compressor, Limiter, Gate
Supports Audio Unit (AU)
Rating total: 2.6 (5), current: 2.6 (5)
Released 12/09/2020
Updated 11/29/2024

ADverb2 is an accurate model of a vintage digital plate reverb rack unit from the 80s, with a few modern tricks up its sleeve.

Price $4.99
Author Audio Damage, Inc.
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.63157 (19), current: 4.63157 (19)
Released 04/30/2018
Updated 07/30/2026

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

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

Velocity Filter is the way to make all your synthesizer patches respond to MIDI velocity in a natural and musical way.

Price $2.99
Author Blue Mangoo Consulting Company Limited
Type Effect, Tool
Supports Audiobus, Audio Unit (AU)
Rating total: 5 (7), current: 5 (7)
Released 07/24/2019
Updated 07/30/2026