iOS Musician Apps (17) Supported Technologies is Inter-App Audio (IAA), Type is Controller

ChordPolyPad is a chords player for Midi instruments, sequencers or virtual instruments installed on the same iPad.

GeoShred is an expressive musical instrument with a multi-touch performance surface, coupled with an advanced physical model of a guitar.

KB-1 is a an expressive virtual keyboard designed for a multitude of scenarios.

Chordy 2 is a chord player app for music creators.

A matrix-controlled arpeggiator designed to play with your thumbs.

PolyHarp is a virtual musical instrument and a thought experiment. It's a testbed for harmonic theory as well as a great multi touch simulator of the good old "idiot zither" you have in the attic.

Synthecaster fuses elements from guitars and keyboards into a full range polyphonic instrument that is intuitive, accommodates a wide variety of playing styles, and generates an even wider variety of sounds.

Ribbons is an extraordinarily fun and expressive musical instrument for iPad.

TC-Data is a MIDI and OSC (Open Sound Control) controller that sends messages to other apps and hardware.

Even if you've only played air guitar, ThumbJam lets you sound like a pro.  Pick an instrument and jam - with all the scales to choose from you'll never hit a wrong note.

dot Melody is a multidimensional graphic arpeggiator, sequencer, and drum machine.

Musk MIDI Keyboard is an expandable MIDI keyboard.

Knob Lab is a powerful MIDI controller for iOS devices.

TouchOSC is a modular OSC and MIDI control surface for iPhone, iPod Touch and iPad by hexler.

Gestrument Pro takes everything we loved about Gestrument and improves on its original functionality while introducing a host of new features such as multi-touch, recordable automations, advanced scale editing and our unique system of highly tweakable modular generators that define the pitches and rhythms.

"Stravinski" is a melody generator that creates eight-bar piano melodies with adjustable complexity.

PhaseRings is a musical instrument for performing expressive music with touch gestures. Anyone can create a beautiful piece of music with our sound schemes and generative composition engine.