iOS Musician Apps (557) Supported Technologies is Audio Unit (AU)

Some of the most commonly used MIDI manipulations in one handy package. This is MidiFire's Channel Strip module in AUv3 format.

This is a natural sounding reverb audio effect.

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

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.

Aparillo is an advanced 16 voice FM synth tailored for complex sound structures , majestic motions, moving and evolving soundscapes and atmospheres that are perfect for film, TV or games.

"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.

AUv3 Midi sequence generator which generates musical evolving sequences  that you can further automate or modulate via midi.

Harmonizr is a vocal harmonizer offering a unique and fun user interface.

Ferrite is an app you need for creating podcasts, radio journalism, or other professional voice production work — lectures, speeches, voiceovers and more.

Ribn is a MIDI controller with 8 assignable ribbons. What makes Ribn unique is its ability to record and loop your finger movement.

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.

RX950 Classic AD/DA Converter is a Classic AD/DA Converter emulator.

Blue Mangoo Parametric Equalizer is an audio unit plugin, with six bands of filter controls.

With this instrument you can transform any sound into a playable musical instrument via a technique known as Granular Synthesis.

AudioKit Synth One is a completely free & open-source professional iOS Synthesizer. 

"StepPolyArp Unit" is a real-time polyphonic and polyrhythmic MIDI step arpeggiator and step sequencer. It can be used as a standalone application or an Audio Unit MIDI effect plug-in.

Perforator is a rhythmic gating audio effect: it will creatively snip, cut, gap and filter incoming audio to create rhythmic patterns out of sustained sounds.

AAS Objeq transforms those beats to sound closer to a real percussion instrument.

Kosmonaut is Multitap Delay with a twist. In addition to adding echoes to your audio, it packs a bunch of extra tools to put your music in space.

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”.