iOS Musician Apps (624) Supported Technologies is Audio Unit (AU)

RouteMIDI, in conjunction with a DAW such as Garageband, will allow you to create tracks that will use any of your external MIDI synthesizers for that track, as alternate to instruments etc. built into the DAW.

If you play a musical instrument or sing a song, this app should be supported by you higher / lower the pitch.

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

These instruments are NOT sample libraries. Unlike sampling, which uses recordings to replicate the sound of an instrument, physical modeling doesn’t generate a sound as such but creates the conditions for the system to create it according to an external input.

iFX Rack is an analog modeled virtual effects rack for your iOS Device.

MicroPitch is a fine-resolution pitch shifter for subtle tone fattening, plus delays for interesting slap back effects.

Transit hosts 18 effect-modules, freely loadable across 7 slots.

Need to look up sheet music, guitar tablatures, lyrics, mixing notes, chord charts or search for a ‘how to...’ YouTube video? Web AU makes that possible without disrupting your audio production workflow.

sequencism is a music sketchbook tool that allows the creation of short and simple pieces of music.

iSEM is a recreation of the classic 1974 Oberheim SEM (Synthesizer Expander Module), one of the world's first self-contained synthesizer modules and the first to bear the "Oberheim Electronics" name.

Visual EQ Console is a multi-band EQ console with the ability to analyse audio in real time giving a spectrum representation of the frequency response. 

GarageBand is a DAW by Apple.

Tune Maker is a music composition tool which helps you to understand the basic components of music and to quickly begin creating your own compositions.

The Chomplr name is taken from sample "Chopping Rompler", inspired by the timeless workflow of creating music using samples to make new works. Chomplr brings a new iOS approach to creative sample manipulation. As a standalone module or AUv3 plugin, Chomplr offers quick access to it's robust sample library and an online store is built in. 

SquareSynth is a hybrid analog/8bit style synthesizer. It takes features from the NES console, and the Commodore 64 personal computer.

Gain Stage Acoustic makes electric guitars sound acoustic and makes acoustic guitars with piezo pickups sound more natural.

It's vintage and It's very warm. All the sounds come from impulse responses grappled on the web.

TalkWorks is an AUv3 plugin designed to give any sound a human vocal like quality by simulating vowel sounds found in human speech.

MixBox CS packs 70 award-winning mixing processors and creative effects into a convenient 500-series style iPad app.

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