iOS Musician Apps (344) Supported Technologies is Audiobus, Type is Instrument

Playset is an intuitive drum and synth sequencer, designed for instant fun and live music.

GrainProc is a real-time granular synthesizer with which you can create new sounds and musical textures by affecting your voice, your instrument, or any input.

SpringSound is a physical-modeling audio synthesizer that produces sounds by simulating interactions and vibrations of a set of activators and masses connected to springs.

Mix tracks in perfect sync on a powerful audio engine. Engineered & designed by Mixvibes, digital DJing pioneer for 15 years.

Alina String Ensemble is a musical keyboard application for iPhone/iPad/iPod touch that simulates the Solina String Ensemble.

iSEM is a recreation of the classic 1974 Oberheim SEM (Synthesizer Expander Module), one of the world's first self-contained synthesizer modules and the first to bear the "Oberheim Electronics" name.

Sampletoy is a radical new musical instrument/plaything; part sampler, part granular synthesiser. Use it to capture sounds through the microphone, then play, loop, pitch and distort them live on the screen.

Designed to deliver authentic dub sounds and effects, iTALIZER at it's heart is a monophonic synthesizer paired with an authentic tape echo emulation.

Pixound provides a deep musical experience that lets you instantly create music using any picture.

Create acoustic guitar backing tracks for any song in minutes with the chord-based audio loop app.

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

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

VOSIS is a synthesizer that uses scanned synthesis of greyscale image pixel data from photos or live video input. It is also a tool for image audification/sonification and visual music performance.

Create drum tracks for any song in minutes with SessionBand – the chord-based audio loop app.

GarageBand is a DAW by Apple.

DM1 is an advanced vintage Drum Machine.

Chorus Sampler is an advanced, easy-to-use sampler.  It features sample recording, cropping, audio importing/exporting, looping, and configurable per sample effects.

The Chomplr name is taken from sample "Chopping Rompler", inspired by the timeless workflow of creating music using samples to make new works. Chomplr brings a new iOS approach to creative sample manipulation. As a standalone module or AUv3 plugin, Chomplr offers quick access to it's robust sample library and an online store is built in. 

AudioStretch is the audio and video transcription tool. Now you can manipulate the pitch, speed and transcribe your tunes from both audio and video files; or by using your phone’s camera you can capture video directly into AudioStretch and transcribe it.

SK-51 is an all-in-one keyboard inspired by the Casio SK-1 (and his brother the SK-5), a 8-bit lo-fi keyboard from the 80’s, with sampling features and onboard drum machine.
Called the poor man's sampler at the time, this keyboard was a real instrument and has been used by many major artists such as Fatboy Slim, Portishead, Autechre and Nine Inch Nails.