iOS Musician Apps (115) Supported Technologies is Inter-App Audio (IAA), Instrument Sounds is Keyboards

Laplace is a physical-modeling synthesizer based on resonator synthesis that makes it easy to create bowed string, plucked string, blown pipe and metallic sounds.

Mimicking the layout of Hohner's iconic chromatic button accordions (CBA), both B-System (Bayan) and C-System, this intuitive virtual accordion is easy to play and sounds exactly like the real instrument.

Englitina is an authentic-sounding English Treble Concertina for the iPad.

Multilevel Interactive Sound Synthesizer. Up to 240 Frequency Modulation Oscillators or simple Wavetable Additive.

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

Shape is a polyphonic synthesiser allowing the user to draw the shape of the oscillator waveform.

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

Moebius Lab is a multimorphic sound processor which contains a synth, a varispeed stereo sample player, effects and LFOs that can modulate each parameter.

The Moog Model 15 App is the Moog modular synthesizer and synthesis educational tool.

Elsa is a retro style sampling keyboard with tempo based looping.

SunVox is a small and fast cross-platform modular synthesizer with pattern based sequencer (tracker).

Electric Vintage is a virtual instrument based on a reproduction of a famous vintage electric piano (1976).

miRack is a Eurorack-style modular synthesizer. It aims to provide user experience and audio quality close to those of the real Eurorack hardware.

Xynthesizr is a streamlined yet capable 32-step matrix sequencer/monotimbral synthesizer with generative features and MIDI.

Lagrange synthesizer has two oscillators, a noise generator and two filters that can be selected from various algorithmic models.

PixelWave is an experimental synth with old school pixel interface.

The Minimoog Model D App is a mobile transmutation of the world’s first portable synthesizer, the Minimoog Model D®.

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

ToyTone is simple synthesizer. Select waveform, and move the slider. Tap the pad at bottom, you can play.