iOS Musician Apps (346) Supported Technologies is Audiobus, Type is Instrument

VOLT is a virtual analog synthesizer designed to create classic synth sounds while emphasising expressive play.

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

SynthMaster One iOS is the mobile version of KV331 Audio's SynthMaster One software synthesizer.

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

"StepPolyArp Unit" is a real-time polyphonic and polyrhythmic MIDI step arpeggiator and step sequencer. It can be used as a standalone application or an Audio Unit MIDI effect plug-in.

Galileo Organ 2 is a tonewheel and transistor organ app.

A creative bass music synth sequencer for electro melodies or dirty phat & funky acid techno basslines.

Celtic Sounds is a fully transposable MIDI sound module with five traditional Irish musical instruments.

AudioLayer is a full featured open standard audio multi-sampler pushing the boundaries beyond what has been available even in the desktop music production worlds.

Gestrument Pro takes everything we loved about Gestrument and improves on its original functionality while introducing a host of new features such as multi-touch, recordable automations, advanced scale editing and our unique system of highly tweakable modular generators that define the pitches and rhythms.

With Skwitch Music it’s easy to compose your own riffs, melodies and chord progressions.

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

Loopseque is back with a rounded beat machine, percussion drum sequencer, the ability to change samples, patterns on the run, use effects, filters, etc to easily create a musical atmosphere that you like.

Fed up with standardized presets and instruments? Feel lost in overcomplex filters and effects? Don’t wanna sound like everyone else? BLEASS is just the right instrument for you: it unleashes your inner musical creativity by bringing music production and performance to its very core: play, perform, compose beats and melodies in a new yet intuitive way thanks to its multitrack sequencer, synthesizer and drum machine.

Epic 64-voice Virtual Analog / PCM iPad Synth. Inspired by the Digital Synths of the 80s and 90s.

Mellowsound is an emulation of a legendary instrument, a keyboard sampler from the 60s used by many famous artists like the Beatles, David Bowie, Radiohead and many others, this mythic instrument is called The Mellotron.

Holding the simplicity of eighties instruments and carrying their raw heritage to you, it turns your device into a pocket beat making companion. I believe that designing a pure interface, simply displaying your machine without any distraction, was the best way to reflect the spirit of the period it was born.

Piano For You is suitable for professional musicians as well as for learning piano.

PolyHarp is a virtual musical instrument and a thought experiment. It's a testbed for harmonic theory as well as a great multi touch simulator of the good old "idiot zither" you have in the attic.

Backpack Studio allows you to easily create professional sounding,  studio quality recordings -  from anywhere in the world.