iOS Musician Apps (503) Supported Technologies is Inter-App Audio (IAA)

Additive synthesis is a sound synthesis technique that creates timbre by adding sine waves together. The timbre of musical instruments can be considered to consist of multiple harmonic or inharmonic partials or overtones.

For all creatures in the ocean of sound - Sonic textures from other worlds, Analog signature sounds,  Cut-through-the-mix leads and silkily smooth pads.

AudioLayer is a full featured open standard audio multi-sampler pushing the boundaries beyond what has been available even in the desktop music production worlds.

The hybrid synthesis algorithm on which Addictive Pro is based provides you with efficient means for easy control of complex sounds far beyond usual sound synthesis methods.

SpringSound is a physical-modeling audio synthesizer that produces sounds by simulating interactions and vibrations of a set of activators and masses connected to springs.

BLEASS Compressor is a tool for iOS musicians offering external sidechain input, input filters and real-time visualization with very low CPU usage.

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

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.

Bit Maestro is an AUv3 bit crusher that goes beyond regular bit rate reduction, allowing you to affect and manipulate your sound at the individual bit level.

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.

A brickwall peak limiting app, for the complete control of your audio volume.

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

Dedalus Delay is a real time audio mangler. A network of delay lines is continually granulated and modulated, producing a labyrinth of echoes, which are further processed by filters, dynamic processors and saturation modules.

The Amazing Noises Reverb is a Feedback Delay Network (FDN) Reverb Effect, which can create nice reverberated ambiences, from small rooms to huge buildings.

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

Yukawa is an AUv3 compatible multi-effects plug-in that combines a tempo-synchronized multi-tap sequence delay that produces rhythmic phrases, a modulatable stereo delay, and a DJ mixer-style filter.

Kajita combines two-stage multi-tap stereo delay with reverb, allowing you to create complex spatial effects.