iOS Musician Apps (64) Supported Technologies is Audio Unit (AU), Type is Tool

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The Red Rock Sound SA60 real time 1/3 octave Spectrum Analyser combines ease of use, accuracy and versatility in one economical, reliable unit. Interface is modelled on classic DN60 spectrum analyser, originally developed in 1980.

Price Free
Author RRS, OOO
Type Tool
Supports Audio Unit (AU)
Rating total: 5 (11), current: 5 (11)
Released 05/15/2020
Updated 12/29/2025

RhythmBud is a MIDI effect application that would transform incoming MIDI messages into the rhythmic pattern you will create on its editor.

Price $4.99
Author Cem Olcay
Type Tool
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.55 (20), current: 4.55 (20)
Released 11/06/2019
Updated 05/29/2021

"QuantiChord" is a MIDI effect that generates chords from incoming notes and quantizes the results to a pre-defined scale. It can be used as a standalone application or as an Audio Unit MIDI effect plug-in.

Price $12.99
Author Laurent Colson
Type Tool
Supports Audiobus, Audio Unit (AU)
Rating total: 4 (11), current: 4 (11)
Released 11/16/2018
Updated 01/29/2026

Polythemus AUv3 Midi was created for five main uses: сreating a polyphonic synth from individual monophonic synths, stacking different or similar synths that play alternatively for variation, interesting variations in timbre & rhythms by having multiple synths driven with a sequencer (e.g. Quantum) or arpeggiator, work outside IOS on hardware synths, voice allocation of externally hosted software vst(e.g. Logic or Ableton Live) using mac osx IDAM for direct device to mac midi.

Price $3.99
Author anthony saunders
Type Tool
Supports Audio Unit (AU)
Rating total: 4.42856 (7), current: 4.42856 (7)
Released 03/05/2019
Updated 03/30/2019

polybeat is an advanced and extremely flexible drum and percussion sequencer able to generate complex polyrhythmic and polymetric rhythmic patterns.

Price $7.99
Author Corne Driesprong
Type Tool
Instrument sounds Drums, Percussion
Supports Audiobus, Audio Unit (AU)
Rating total: 4.45 (20), current: 4.45 (20)
Released 09/10/2021
Updated 05/22/2022

Poly 2 is a generative sequencer that creates evolving patterns and melodies based on the power of polyrhythms.

Price Free
Author James Milton
Type Host, Tool
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.77893 (674), current: 4.77893 (674)
Released 10/12/2019
Updated 09/04/2025

Plotony is a harmonograph simulator that transforms MIDI input into beautiful, animated drawings.

Price Free
Author Grant Emerson
Type Tool
Supports Audiobus, Audio Unit (AU)
Rating total: 5 (6), current: 5 (6)
Released 03/23/2020
Updated 06/19/2020

Physicles is a container of physics-based Audio Unit MIDI plugins. These AU MIDI plugins generate MIDI messages through the use of an underlying physics engine, which models the physical interactions between various entities.

Price Free
Author Rodrigo Roman
Type Tool
Supports Audiobus, Audio Unit (AU)
Rating total: 4.55999 (25), current: 4.55999 (25)
Released 08/06/2018
Updated 01/03/2019

Photon AU - Midi Recorder with Pad playback & Groove. Record your midi performances using this audio unit in your DAW then save/export them as standard midi files via email or directly to other apps.

Price $3.99
Author anthony saunders
Type Tool
Supports Audio Unit (AU)
Rating total: 3.57895 (19), current: 3.57895 (19)
Released 02/16/2019
Updated 03/24/2019

This application is simply a container for the Audio Unit and also serves as the documentation for the AU. PhaseDelayArray is a bit of a strange effect. O.K, so, what is it? PhaseDelayArray has three effect units chained together in an interesting configuration, and one of these units is just a little bit twisted.

Price Free
Author Neon Silicon
Type Effect, Tool
Effect type Other
Supports Audio Unit (AU)
Rating total: 4.45455 (44), current: 4.45455 (44)
Released 08/02/2019
Updated 04/14/2021

OSCILLOSCOPE & SPECTROGRAM is an audio analyzer app and audio unit plugin.

Price $5.99
Author Blue Mangoo Consulting Company Limited
Type Tool
Supports Audio Unit (AU)
Rating total: 4.64286 (28), current: 4.64286 (28)
Released 08/13/2020
Updated 09/04/2020

MusiKraken is an Experimental MIDI Controller Construction Kit. Make music using your hands, face, voice or by rotating the device!

Price $9.99
Author Snarp
Type Tool
Supports Audio Unit (AU)
Rating total: 4.95652 (23), current: 4.95652 (23)
Released 11/24/2020
Updated 04/29/2026

This is an AUv3 compatible Multi-Track Recorder plugin specifically designed for AUM and other DAW's that don't support audio recording capabilities.

Price $10.99
Author 4Pockets.com
Type Tool
Supports Audio Unit (AU)
Rating total: 4.0606 (33), current: 4.0606 (33)
Released 10/21/2019
Updated 09/01/2025

Mozaic runs inside your favorite AU MIDI host, and gives you practical building blocks such as LFOs, pre-fab GUI layouts, musical scales, AUv3 support (with AU Parameters, transport events, tempo syncing, etc.), random generators and a super-simple yet powerful script language.

Price $1.99
Author Bram Bos
Type Tool
Supports Audiobus, Audio Unit (AU)
Rating total: 5 (80), current: 5 (80)
Released 05/17/2019
Updated 07/10/2025

midiSTEPs is a powerful and fun MIDI step sequencer app that sends MIDI note and CC messages to other music apps and external synthesizers.

Price $9.99
Author Arthur Kerns
Type Host, Tool
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.33333 (15), current: 4.33333 (15)
Released 10/10/2015
Updated 03/14/2021

MIDISpy - MIDI Monitor. A handy little utility for monitoring MIDI connectivity.

Price Free
Author Kai Aras
Type Tool
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 3.8 (5), current: 3.8 (5)
Released 01/11/2019
Updated 03/30/2020

MidiMixer is an AUv3 plugin specifically designed for AUM which allows you to control your mix and record automation synced to AUM's timeline.

Price $9.99
Author 4Pockets.com
Type Tool
Supports Audio Unit (AU)
Rating total: 4.65385 (26), current: 4.65385 (26)
Released 12/09/2020
Updated 09/02/2025

MidiFire is a free-form, modular AUv3 MIDI effect host, CoreMIDI router, processor, monitor and clock source from the makers of MidiBridge.

Price $11.99
Author Audeonic Apps
Type Tool
Supports Audio Unit (AU)
Rating total: 4.47058 (17), current: 4.47058 (17)
Released 09/22/2017
Updated 02/11/2020

midiDREAMs is a MIDI AUv3 sequencer plugin designed to work like a classic analog-style modular sequencer with 16 virtual sliders and up to 64 steps per pattern.

Price $9.99
Author Arthur Kerns
Type Tool
Supports Audiobus, Audio Unit (AU)
Rating total: 5 (8), current: 5 (8)
Released 02/20/2021
Updated 04/02/2024

MIDI Tools is a suite of AUv3 MIDI audio units for iOS that lets you manipulate the MIDI messages inside your DAW’s effects chain, creating complex or otherwise impossible MIDI routings or effects.

Price $4.99
Author Victor Porof
Type Tool
Supports Audio Unit (AU)
Rating total: 4.72727 (22), current: 4.72727 (22)
Released 01/21/2019
Updated 01/29/2019
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