iOS Musician Apps (148) Supported Technologies is Audiobus, Instrument Sounds is Keyboards

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

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

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.

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

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

Combo Organ Model V is a musical keyboard app for iPad/iPhone/iPod touch that simulates the electric transistor organ, is called a Combo Organ. It was a big success in the 1960s.

Crystal Synth XT is a full featured semi-modular synthesizer, ideally suited to creating lush evolving soundscapes.

Cube Synth is a groundbreaking new software instrument giving you the power and flexibility of additive synthesis together with easy editing and morphing capabilities.

Specific sound morphing capabilities enables you to easily create complex evolving sound scapes, vocal phrases or stunning rhythms simply by choosing up to four sound sources from a predefined set.

This app reproduces the functionality of Casio’s best-selling CZ-series models, such as the CZ-101 (first released in 1984), and also includes new functions.

DXi is a FM synthesizer application inspired by 80's most popular FM synthesizer.

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

With EGSY01 you can create sounds, from modern ones to vintage analog ones, working with arpeggiator, step sequencer and FM, addictive and subtractive synthesis.

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

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

Esoteric Synth is a unusual generator of synthetic sound events. The synthesis is based on 5 oscillators which are intersected through an multiple amplitude modulation and multiple frequency modulation making  an high sound variability. This App is suitable to generate complex sound textures, glitches, noises, sound clouds, sound drones, point sounds and more.

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

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

FM4 is a four operator FM synthesizer for iPad.