iOS Musician Apps (144) Supported Technologies is Audiobus, Instrument Type is Synth

Strng is a string synthesiser inspired by the karplus-strong alghorithm. The physical modelling starts with a short burst of noise that then guided by a tuned delay buffer and string tension filter, generates plucked string like sounds.

GrainProc is a real-time granular synthesizer with which you can create new sounds and musical textures by affecting your voice, your instrument, or any input.

miniSynth is the very first iOS synthesizer.

CHAiOS SYNTH 2 is a synthesizer/melody generator that creates unique melodies with just one tap.

Orphion is a musical instrument with a unique sound between string instrument and percussion.

Mynth is the new intuitive and powerful synthesizer by Fingerlab.

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

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

Spectrum is a collection of Audio Unit ports of popular eurorack synthesizer modules.

Fed up with standardized presets and instruments? Feel lost in overcomplex filters and effects? Don’t wanna sound like everyone else? BLEASS is just the right instrument for you: it unleashes your inner musical creativity by bringing music production and performance to its very core: play, perform, compose beats and melodies in a new yet intuitive way thanks to its multitrack sequencer, synthesizer and drum machine.

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

Hexaglyphics is a 13-bit noise generator with an interface based on an original alphabet for hexadecimal values.

Wotja X is a new cross-platform interface for the 'Wotja Generative Music System'.

Groovebox is a free music studio app packed with synths and drum machines.

An app that can also be used stand-alone with a cool built-in FM synth and sound space surface controller.

GarageBand is a DAW by Apple.

Caustic 3 is a music creation tool inspired by rack-mount synthesizer/sampler rigs.

Electro-Harmonix, a pioneer since 1968 in the field of sound effects pedals for musicians, has produced an app which is a faithful digital re-creation of their circa 1980 analog cult-classic, The MINI-SYNTHESIZER.

A strange noise-making device.

AutoArp turns your iPhone (or iPod Touch) into a musical instrument that is halfway between a traditional auto-harp zither and an arpeggiated analogue-style synth.