iOS Musician Apps (103) Instrument Sounds is Other

Annoydio has a grid of pads which you can assign, manipulate, and play sounds.

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

Nils is a real time sound effect machine with a minimalistic looper. It comes with bitcrush, delay and gain for distortion.

Bebot is a musical instrument that anyone can play. Instead of a keyboard, it has an easy-to-use touch control system.

AASamplePlayer turns any sound file into a playable instrument, just load it up with your DAW (like GarageBand), batch load your favorite sample packs and have fun :)

L7 is the live looper for iOS.

Droneo is a synthesizer which drones with various timbres and precise intonations that blur the distinction between tones, timbres and chords. Its drone is great for meditation, centering, and calming,  walking and biking, but also can be set up for discordant noise and insect-like buzzing and chirping.

PixiTracker 1BIT is a simple and fun tool to quickly create musical sketches, chiptunes and experiments with TRUE 1-BIT SOUND (like on old microcomputers).
No musical knowledge required.

AnalogKit lets you play, share, and build synths and effects in an incredible digital playground.

iVoxel is not only a vocoder - the unique concept of iVoxel turns this vocoder into a singing machine.

This one is quite experimental and CPU heavy app!

The new Version 3 of dreamSTATE's multimedia iAlbum of ever-changing ambient music and urban ambient art can now be used by both Listeners and iMusicians

Turning your iPad in to a classic sounding theremin.

Ribbons is an extraordinarily fun and expressive musical instrument for iPad.

Orphion is a musical instrument with a unique sound between string instrument and percussion.

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. 

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.

Koala is the ultimate pocket-sized sampler. Record anything with your phone's mic instantly. Use Koala to create beats with those samples, add effects and create a track!

Metronomics is not only a metronome, but a tool designed to help build a solid sense of time and rhythmic security.  It's a new kind of metronome -- use Metronomics to generate random patterns, sequenced grooves, or a combination of both to help you practice with more than just your typical click track.

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.