iOS Musician Apps (145) Supported Technologies is Audiobus, Instrument Type is Synth

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

Modulin is a customizable synthesizer. It allows for unique personal expression while providing a wide spectrum of visual feedback.

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.

LoAdKer is a novel rhythm event generator that is based on fractal sequences.

GarageBand is a DAW by Apple.

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.

Make music in seconds. Share, remix and collaborate with music makers all over the world.

SynthMaster Player for iPad is the MOBILE PLAYER VERSION of the award winning SynthMaster software synthesizer.

Chiptunes Pro lets you make retro music the way it should be made - with chips. Build your circuit to lay down drum beats, basslines, and tunes.  No knowledge of electronics needed.

Explore unreal synthesis with the most unique performance control on iOS! TC-Performer presents a multi-touch performance environment unlike any other synthesizer.

Jam Synth is a fully featured monophonic guitar synthesizer / multi FX for iOS.

PhaseRings is a musical instrument for performing expressive music with touch gestures. Anyone can create a beautiful piece of music with our sound schemes and generative composition engine.

Dandy is a sampler/synthesizer for iPhone inspired by Dandy Desmonds composition “Magnetic Loops for 15 Tape Decks” from 1938, which is one of the earliest known works of electroacoustic music.

VOSIS is a synthesizer that uses scanned synthesis of greyscale image pixel data from photos or live video input. It is also a tool for image audification/sonification and visual music performance.

Each of the 2 oscillators offers a selection of 5 waveforms: sawtooth and pulse waves are here, along with noise, triple saw and triple FM waves. There's also an additional sub-oscillator strapped into the master section for added oomph.

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

Tone generator with two Oscillators and one Noise generator, each with individual lowpass filters.

TweakyBeat is a drum machine synth.