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

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

ArpBud 2 is a MIDI Arpeggiator app where you can create unique arp patterns and be able to arpeggiate your favorite software or hardware synthesizers.

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

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

This is a AUv3 compatible analyser / tuner which can be used as plugin with your favourite DAW such as Cubasis, Meteor, Auria or GarageBand.

DigiKeys is an AUv3 compatible MIDI sequencer plugin for AUM or other AUv3 compatible host applications.

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

SnakeBud is a 16-step AUv3 MIDI Sequencer with a 4x4 grid. You can set the note, gate, velocity and probability values for each step and you can also toggle them on/off.

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.

The music theory reference tool for musicians of all skill levels. Tonality allows you to view and listen to a large database of piano chords and scales and features a chord-recognition tool that can identify chords you play on your instrument.

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

StepBud is a MIDI Sequencer with Audio Unit AUv3 plugin, Audiobus and Ableton Link.

ScaleBud is a music theory tool for composers, artists and learners. It has more than 40 most popular scales and counting.

LoopBud is a super simple yet very powerful MIDI recorder and looper.

Visual Mixer is an audio unit plugin that puts the volume and pan controls for all your tracks together into one simple interface.

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.

Metronomics is not only a metronome, but a tool designed to help build a solid sense of time and rhythmic security.  It's a new kind of metronome -- use Metronomics to generate random patterns, sequenced grooves, or a combination of both to help you practice with more than just your typical click track.

AUVideoPlayer is a video player that works as an Audio Unit v3 plugin (AUv3) in your favorite DAW host apps such as AUM, Garageband, Cubasis or Audiobus.

MIDI Tape Recorder is an open source Audio Unit v3 plugin with a radically different approach towards MIDI recording.

cykle is an innovative, semi-generative melodic step sequencer for iOS that is based around the concept of sequencing individual musical parameters (such as pitch, velocity, length, transposition, etc.) independently, by way of decoupled sequencer lanes.