iOS Musician Apps (26) Supported Technologies is Audio Unit (AU), Instrument Sounds is Other

WebSDR is an Audio Unit Plugin that plays audio from Software Defined Radio (SDR) streams. It allows you to incorporate the sound of live radio into a live music performance.

This synthesizer emulates male voice vowels in a unique way.

Neon is a lightweight digital audio editor and recording plugin compatible with any AUv3 host.

This one is quite experimental and CPU heavy app!

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. 

Castamatic is the app to listen to podcasts on any iOS device.

Slice your audio samples with ReSlice and create flexible musical atoms which can be triggered by MIDI notes or the touch of your fingers.

Portable Music Production Studio : create beats, compose whole tracks, sample, record, sequence, perform, mix and arrange your own music.

Chameleon is an AUv3 compatible sampler instrument plugin for your favourite DAW.

iMPC Pro fuses innovative song creation with the iconic MPC workflow.

An architecturally unique and sonically characterful looping toolkit for producers and live performers, inspired by both modern looper pedals and vintage tape-based setups, Enso combines elegant and intuitive UI design with a deep but accessible feature set and stellar sound quality.

Turbosounds for Accordion provides many special sounds of the Oberkrainer folk music.

You can think of auGEN X in two ways:  first, it is a handy utility for making audio test sounds, and second, it is a performable creative sound design tool.

Radio Unit is an Audio Unit plugin extension (AUv3) to play internet radio stations.

iMPC Pro 2 for iPhone fuses innovative song creation with the MPC workflow.

Co-designed with Berlin-based electronic musician Hainbach, Gauss brings the oldschool tape-looping art form to mobile devices.

Looperator is a slicing and processing plugin for all styles of electronic music.

AASamplePlayer turns any sound file into a playable instrument, just load it up with your DAW (like GarageBand), batch load your favorite sample packs and have fun :)

With sEGments slicer/sampler app you can Import any loop/sample/audio file and find the best samples inside it, using the automatic transient detection or manually adding markers.