iOS Musician Apps (53) Instrument Type is Synth, Free

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.

Endlesss is a free-to-use collaborative music studio with built in drums, synths, fx and much more. Easy to get started for the novice electronic musician with boundless opportunities for the seasoned creative.

The app gives you the basis to try out Grid Synth, Sampler & Rhythm. The Guide explains the basic functions to create soundscapes & melodies.

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

SynthMaster One iPhone is KV331 Audio's first full blown synth app for iPhone. It's a powerful wavetable synth with an intuitive workflow. With its simple layout, rich wavetable/waveform content and inspiring factory presets library, designing new sounds with SynthMaster One iPhone is a joy.

Syntorial is a synthesizer training app, that will teach you how to program synth patches by ear.

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

ChowKick is a kick drum synthesizer based on creative physical modelling of old drum machine circuits. The synth contains
useful parameters for adjusting the tone and fundamental frequency of the synthesized kick drum.

Accelerometer Synthesizer and Bluetooth MIDI Controller.

4Waves Synth AUv3 is an easy to use synthesizer with a powerful sound.

Nanologue boasts a wide scope of inspiring sounds and professional sound effects, sporting a straightforward multi-touch interface and a great-sounding monophonic synthesizer.

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

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

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

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

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.

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

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

LCW-2 mono is a little complicated synthesizer based on ToyTone and implements several experimental functions.