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

Photophore is a unique instrument that uses flocks of up to 100 sound generators to create rich, organic synthesizer sounds.

SpectrumGen is a spectral synthesizer with a simple and effective user interface.

Annoydio jr has a grid of pads which you can assign, manipulate, and play sounds.

The Black Distortion plugin modeled on RAT2* distortion pedal will be your go-to distortion plugin for every recording, whether it’s rock, blues, punk, or jazz.

Clon Minotaur Transparent Overdrive is modeled on The Klon Centaur* a guitar overdrive pedal developed between 1990 and 1994. The Clon Minotaur is characterized as a "transparent" overdrive, meaning it adds gain to the signal without significantly altering the tone of the guitar.

Respiro Wind-Synth for iOS is a free standalone app (IAA) and AUv3 plugin synthesizer giving you access to six fully functional wind instruments for your device.

Mynth is the new intuitive and powerful synthesizer by Fingerlab.

Deplike lets you enjoy a full studio guitar setup from your iPhone & iPad. Install and get your dream pedalboard, amps and cabinets in your pocket.

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

Jazz, Rock, Metal, no matter what genre you play. NA 808 Overdrive Pro little magic box plugin will prove to be essential to your collection.

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

BIAS FX 2 Mobile transforms your mobile device into the ultimate all-in-one guitar effects processor, letting you explore hundreds of premium amps, pedals, and studio racks to create your dream guitar tone.

rejected

A Simple Ad-Free Piano-like Musical Keyboard. Easy to Play, Good Response and Small Application Size. Just Play the Instrument. The app doesn't use sampled real sounds but use FM synthesis. It sounds like piano though it's false.

Chorus Sampler is an advanced, easy-to-use sampler.  It features sample recording, cropping, audio importing/exporting, looping, and configurable per sample effects.

AudioKit Bass 808 Synth is perfect for earth-shaking sub bass lines and creating your own custom electronic drum sounds – It’s the ultimate tool for creating your own 808 Kick basses!

The Analog Rack Chorus plugin is a very simple but powerful chorus plugin inspired by the most famous Chorus pedals and rack effect units.

The Analog Rack Noise Gate plugin is a very simple but powerful noise gate plugin especially tuned for guitar and bass.

The Analog Rack Cleaner plugin is high pass and low pass filters in a single rack Fx plugin to clear up low-end rumble and high frequency noise.