iOS Musician Apps (207) Instrument Sounds is Keyboards

Just a Toy Synthesizer. Included: 2 Oscillators, LPF, Delay effector, Ribbon controller.

SquareSynth is a hybrid analog/8bit style synthesizer. It takes features from the NES console, and the Commodore 64 personal computer.

Ravenscroft Grand is a piano sampler.

Portable Music Production Studio : create beats, compose whole tracks, sample, record, sequence, perform, mix and arrange your own music.

Waveshaping Synthesis is a type of distortion synthesis that can create dynamic spectra in a controlled way.

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

mood is a personal interpretation of the legendary Analog Synthesizer by Eugenio Giordani

iPulsaret is a new real-time software capable of all time-domain varieties of granular synthesis.

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

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

Accordion Vintage is a virtual sampled instrument based on an original Italian accordion made in Castelfidardo in the 60s years.

Borderlands Granular uses a technique called granular synthesis, which involves the superposition of tiny fragments of sound, or “grains," to create complex, evolving timbres and textures.

Synclavier Go! is an authentic re-creation of the Synclavier® II Digital Synthesizer of 1980.

The second best sounding piano app in the App Store (after "Colossus Piano")!

Play with the sound of a full cathedral organ, created by award-winning sound designer Kurt Ader.

Colossus Piano sets a new standard in terms of realism, detail and overall quality of piano sounds on your iPad, iPhone and iPod touch.

Grand Piano for iPad and iPhone.

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.