iOS Musician Apps (346) Supported Technologies is Audiobus, Type is Instrument

Build your own guitar or bass rig with up to 6 stompbox FX, an amplifier and speaker cabinet w/Mic.

Ripplemaker is a West Coast Flavored Modular Synth.

Steps by Reactable is a small yet powerful MIDI sequencer that allows you to create complex rhythmic patterns in a surprising new way.

DrumJam is a whole new world of percussion and drums for the iPad, iPhone and iPod touch.

LayR is a polyphonic, multi-timbral synthesizer for iPad and iPhone, delivering up to 256 voices of rich, multi-layered and textured sounds.

AutoPad is an app for musicians that allows you to play ambient pad loops.

RMX-1000 for iPad is a tactile iPad app that lets you add high-quality FX to tracks in your iTunes library.

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

Combining a large collection of unique guitars, all-new realtime effects and amps processing, Steel Guitar is easily the most realistic sounding guitar on iOS.

Load any MIDI file and sound library (a small General MIDI sound font is included). Play midi files with additional features.

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.

DrumKick is the live performance drum app.

iMini is a recreation of the legendary synthesizer created by Bob Moog in 1971, one of most iconic synthesizers of all time.

When a punchy, fat sound is demanded, look no further. iProphet recreates the unique sound of the classic Sequential Circuits Prophet VS synthesizer.

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

Metronome for iPhone, is also an intuitive and powerful groove box / drum machine and tempo practice tool.

Rhythm Lab is a comprehensive rhythm app that tests your skill and coordination.  There are four types of drills: single, double, drum, and drum kit.

Cotracks is a collaborative music studio for teamwork on a single iPad.

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