iOS Musician Apps (319) Supported Technologies is Inter-App Audio (IAA), Type is Instrument

SDS-x is a "nine pads" style drum module that lets you easily use samples alongside your drum kit.

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

Slow down music, choose the perfect pitch, and learn to play by ear.

Redshrike is a polyphonic synthesizer that combines a resonator designed to make more complicated sound creation and subtraction synthesis with an FM oscillator that creates violent distortion.

Group the Loop brings audio looping to the iPad. Record, loop, overdub, add effects and much more.

Experience playing the full, lush tones of a Dusty Strings D550 chromatic hammered dulcimer right on your iPad.

Just a Toy Synthesizer. Included: 2 Oscillators, LPF, Delay effector, Ribbon controller.

Lorentz is not only a live-oriented analog modeling synthesizer, but also has a resonator that makes metallic and aggressive sounds.

SidTracker64 is the ultimate chiptune production package tool for the iPad. It emulates the SID sound chip from the dominating home computer of the 80s - The Commodore 64.

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

Funk Drummer is the grooviest drum machine with the ability to improvise like a human drummer.

Lagrange synthesizer has two oscillators, a noise generator and two filters that can be selected from various algorithmic models.

SynthMaster One iPhone is KV331 Audio's first full blown synth app for iPhone. It's a powerful wavetable synth with an intuitive workflow. With its simple layout, rich wavetable/waveform content and inspiring factory presets library, designing new sounds with SynthMaster One iPhone is a joy.

A creative bass music synth sequencer for electro melodies or dirty phat & funky acid techno basslines.

Pure Piano is a professional, multi-sampled concert grand piano with a unique Morph Pad that allows you to explore a multitude of sounds ranging from mellow and intimate tones to surreal, cinematic textures.

Tera Synth is a Modular Analog Synthesizer.

The Optigan, short for Optical Organ, was a chord organ from the early 1970’s.

You found it! Drum Beats+ is the metronome app that improves your timing using great sounding drum beats, not a boring click.

Esoteric Synth is a unusual generator of synthetic sound events. The synthesis is based on 5 oscillators which are intersected through an multiple amplitude modulation and multiple frequency modulation making  an high sound variability. This App is suitable to generate complex sound textures, glitches, noises, sound clouds, sound drones, point sounds and more.