iOS Musician Apps (571) Supported Technologies is Audio Unit (AU)

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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: 4.62295 (61), current: 4.62295 (61)
Released 06/23/2022
Updated 07/08/2022

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: 4.78846 (52), current: 4.78846 (52)
Released 08/13/2019
Updated 09/30/2025

Thanks to it's true VA synthesis engine, the use of analog-modelled non-linear filters and extensive modulation options, Flowtones sounds warmer and more analog than digital romplers and wavetable-based synths.

Price $9.99
Author ToneBoosters
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.69444 (36), current: 4.69444 (36)
Released 08/10/2021
Updated 09/29/2025

Harness the enormous power of 8 polyphonic synths: meet KASPAR Supersynthesizer.

Price $19.99
Author Yonac Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.57143 (91), current: 4.57143 (91)
Released 07/20/2017
Updated 11/03/2018

Galileo Organ 2 is a tonewheel and transistor organ app.

Price $14.99
Author Yonac Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.43478 (92), current: 4.43478 (92)
Released 07/27/2018
Updated 02/13/2022

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: 4.35526 (76), current: 4.35526 (76)
Released 04/26/2021
Updated 05/12/2025

Roxsyn is a metamorphic guitar synthesizer.

Price $19.99
Author Yonac Inc.
Type Instrument
Instrument type Synth
Instrument sounds Guitar
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.64773 (88), current: 4.64773 (88)
Released 08/05/2019
Updated 11/14/2024

Yonac’s flagship Magellan Synthesizer 2 is a new alchemy of pristine sounds, innovative features, and devotion to user friendliness — all the same preserving the wicked soul of the original.

Price $14.99
Author Yonac Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audio Unit (AU), Ableton Link
Rating total: 4.7317 (123), current: 4.7317 (123)
Released 02/23/2020
Updated 01/20/2022

Kauldron is a synth with new modeling technology, combined with features help you create aggressive synth sounds full of rich analog textures with the fewest knob tweaks.

Price $9.99
Author Yonac Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.62687 (134), current: 4.62687 (134)
Released 11/15/2017
Updated 02/13/2022

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: 4.78571 (28), current: 4.78571 (28)
Released 09/17/2019
Updated 09/28/2025

ToneBoosters Spectrogram shows a real-time spectrogram of the incoming audio signal. The ToneBoosters Spectrogram app captures the microphone input and processes the signals in real time.

Price Free
Author ToneBoosters
Type Tool
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.4 (40), current: 4.4 (40)
Released 09/08/2020
Updated 09/28/2025

The EQ550 faithfully captures the punch, low-frequency transparency, and ultra-tight imaging of iconic American EQs of the late 1960’s.

Price Free
Author RRS, OOO
Type Effect
Effect type Equalizer, Filter
Supports Audio Unit (AU)
Rating total: 4.45455 (11), current: 4.45455 (11)
Released 04/10/2020
Updated 09/26/2025

Kleverb is an algorithmic reverb effect.

Price $19.99
Author Klevgränd produkter AB
Type Effect
Effect type Reverb, Delay, Echo
Supports Audio Unit (AU)
Rating total: 4.76923 (13), current: 4.76923 (13)
Released 10/31/2018
Updated 09/17/2021

Shape your sound with advanced equalising to make your tracks fit in the mix.

Price $19.99
Author Klevgränd produkter AB
Type Effect
Effect type Equalizer, Filter
Supports Audio Unit (AU)
Rating total: 4.85714 (14), current: 4.85714 (14)
Released 08/27/2018
Updated 03/09/2021

DAW LP is an Audio Unit effect that emulates the sound of a vinyl disc (and player).

Price $13.99
Author Klevgränd produkter AB
Type Effect
Effect type Distortion, Drive etc., Other
Supports Audiobus, Audio Unit (AU)
Rating total: 3.57143 (7), current: 3.57143 (7)
Released 07/03/2018
Updated 03/13/2023

Velocity Keyboard is a powerful velocity-sensitive MPE compatible MIDI controller.

Price $9.99
Author Blue Mangoo Consulting Company Limited
Type Controller
Supports Audio Unit (AU)
Rating total: 4.75509 (98), current: 4.75509 (98)
Released 05/08/2019
Updated 09/24/2025

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 $16.99
Author Klevgränd produkter AB
Type Effect
Effect type Reverb, Delay, Echo, Modulation effects
Supports Audio Unit (AU)
Rating total: 4.90909 (22), current: 4.90909 (22)
Released 06/18/2019
Updated 02/25/2021

Helium is a lightweight AUv3 MIDI sequencer plugin designed specifically for AUM. It supports up to 16 tracks of unlimited length with the ability to direct output to 16 channels on up to 16 MIDI output ports.

Price $14.99
Author 4Pockets.com
Type Host
Supports Audio Unit (AU)
Rating total: 4.38298 (47), current: 4.38298 (47)
Released 04/22/2021
Updated 08/28/2025

MultitrackStudio for iPad is an audio/MIDI multitrack recording app. It comes with many high quality audio effects including a guitar amp simulator.

Price $29.99
Author Giel Bremmers
Type Host
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.42856 (28), current: 4.42856 (28)
Released 01/06/2014
Updated 09/18/2025

TTAP for iOS is an AUv3 delay effect inspired both by adventures with analog tape and by otherworldly textural effects only possible in the digital world.

Price $3.99
Author K-Devices
Type Effect
Effect type Reverb, Delay, Echo
Supports Audio Unit (AU)
Rating total: 4.78261 (23), current: 4.78261 (23)
Released 06/29/2020
Updated 09/02/2020
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