iOS Musician Apps (282) Supported Technologies is Inter-App Audio (IAA), Type is Instrument

GuZheng is a Chinese plucked zither that has a history dated back to 500 B.C. It is rich in playing techniques.

Expand your musical horizon by playing Arabic, Armenian, Balkan, Greek, Klezmer, Persian & Turkish sounds, scales and rhythms.

Jam Maestro is a powerful music composition tool for musicians interested in making guitar-centric music.

Pure Synth® Platinum is a full-blown rompler/synthesizer for your iOS device. Neither the synth engine or the sample engine is an afterthought: Both engines are fully capable and feature-rich. The romper section contains a well rounded assortment of analog, synth, string, digital, and acoustic instruments.

Moebius Lab is a multimorphic sound processor which contains a synth, a varispeed stereo sample player, effects and LFOs that can modulate each parameter.

AudioKit Synth One is a completely free & open-source professional iOS Synthesizer. 

Colossus Piano sets a new standard in terms of realism, detail and overall quality of piano sounds on your iPad, iPhone and iPod touch.

Play with the sound of a full cathedral organ, created by award-winning sound designer Kurt Ader.

This app contains the following instruments: Trumpet, Trombone and Saxophone sampled in four different brass sections.

The second best sounding piano app in the App Store (after "Colossus Piano")!

Oriental Strings is a professional sound module app for oriental keyboard players and for musicians who simply want to resemble the typical sound of the Middle East in their songs.

The ultimate orchestra sound app for sophisticated musicians by sound designer Kurt Ader, designed as professional sound module for your iPad, iPhone or iPod touch.

Pure Acid is a bassline synthesizer and drum machine in one app.

BeatMaker is a drum sampler.

Real Guitar is a realistic guitar simulator apps.

Built for Live performance and hands free use, Quantiloop recreates the simplicity of a hardware loop pedal in an iOS app.

Tardigrain is a granular synthesizer. Sounds are created by taking smaller fragments of a sample and playing them back in a non linear fashion, with settings for grain size, direction, step size and more.

Pixound provides a deep musical experience that lets you instantly create music using any picture.

Slice and sequence your loops with a matrix of markov-chain connections. Introduce order with the probability based coin-flipping pattern sequencer.