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

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

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

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.

Based on Hohner's iconic Corona Classic diatonic accordion, this virtual accordion app plays in all five of the most popular tones: EAD (Mi), FBbEb (Fa), GCF (Sol), ADG, and BbEbAb.

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

PixelWave is an experimental synth with old school pixel interface.

The unique dynamic wavetable synthesis allows you to explore an unprecedented wide range of sonic territory.

SpectrumGen is a spectral synthesizer with a simple and effective user interface.

Compose original beats in the smooth one-window interface, record sound tweaks in realtime and sample your own sounds for direct use.

The concert quality piano app.

The concert quality piano app.

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

The concert quality piano app.

The concert quality piano app.

A matrix-controlled arpeggiator designed to play with your thumbs.

Turn your iPad into the electric piano instrument with a collection of authentic electric pianos and vintage keyboards along with built-in recording.

iMini is a recreation of the legendary synthesizer created by Bob Moog in 1971, one of most iconic synthesizers of all time.

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

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

Arctic Pro Synthesizer / Vocoder is a modern subtractive synthesizer.