iOS Musician Apps (564) Supported Technologies is Audio Unit (AU)

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.

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

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

Koshiba is a 16-step gate sequencer plug-in effect that can transform a sustained sound into a rhythmic phrase.

Grand Piano for iPad and iPhone.

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

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.

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

Flynth is a synthesizer by Fingerlab, designed for musicality and easy use.

TfxReverb is designed for simple and easy operation. When auto size mode is enabled, number of parameters can be controlled by a single dial to adjust size of the reverb sound, which can be synced to tempo.

VAMono is a virtual analog monophonic synthesizer inspired by iconic monophonic analog synthesizers of the 80's.

VADrum2 is a production tool to create drum tracks on iPhone, iPad and Mac. You can program drum sequence, mix the drum sounds and export audio file to be used for production or to be shared with your friends.

TfxEcho is an echo effect AudioUnit Extension plugin. It uses delay lines which are inspired by BBD (bucket brigade device). BBD is used in various analog delay unit and is known for its warm and dark sound.

TfxMod is a chorus / flanger effect AudioUnit Extension plugin. It uses delay lines which are inspired by BBD (bucket brigade device).

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

"QuantiChord" is a MIDI effect that generates chords from incoming notes and quantizes the results to a pre-defined scale. It can be used as a standalone application or as an Audio Unit MIDI effect plug-in.

"StepPolyArp Unit" is a real-time polyphonic and polyrhythmic MIDI step arpeggiator and step sequencer. It can be used as a standalone application or an Audio Unit MIDI effect plug-in.

You can think of auGEN X in two ways:  first, it is a handy utility for making audio test sounds, and second, it is a performable creative sound design tool.

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.

iPhilicorda is an emulation of a vintage organ from the sixties, the Philicorda, created by the Dutch company Philips.