iOS Musician Apps (511) Supported Technologies is Inter-App Audio (IAA)

Yukawa is an AUv3 compatible multi-effects plug-in that combines a tempo-synchronized multi-tap sequence delay that produces rhythmic phrases, a modulatable stereo delay, and a DJ mixer-style filter.

Lagrange synthesizer has two oscillators, a noise generator and two filters that can be selected from various algorithmic models.

Kronecker is a synthesizer with a mechanism to make sounds many times like a rhythm machine each time you press a keyboard.

You found it! Drum Beats+ is the metronome app that improves your timing using great sounding drum beats, not a boring click.

Mersenne is a melodic percussion synthesizer that combines two FM synthesis modules, a noise generator and a resonator.

Redshrike is a polyphonic synthesizer that combines a resonator designed to make more complicated sound creation and subtraction synthesis with an FM oscillator that creates violent distortion.

Lorentz is not only a live-oriented analog modeling synthesizer, but also has a resonator that makes metallic and aggressive sounds.

Poly 2 is a generative sequencer that creates evolving patterns and melodies based on the power of polyrhythms.

Laplace is a physical-modeling synthesizer based on resonator synthesis that makes it easy to create bowed string, plucked string, blown pipe and metallic sounds.

GSi VB3m simulates the famous american tonewheel organ better known as the Hammond Organ B3.

Built for Live performance and hands free use, Quantiloop recreates the simplicity of a hardware loop pedal in an iOS app.

Attack Drums is a synthesizer designed mainly for drum sounds, but the powerful sound engine can also be used for everything else - including vocals.

BAPU is a high-end audio player, that provides the best starting point for your audio system. Your music will sound better everywhere with BAPU, in your car, in bluetooth speakers, in headsets and home stereos. The player is introduced in co-operation with Marko Hietala (Nightwish, Tarot).

Import audio and instantly get a mastered version. Immediately hear a boost in volume and overall sweetening of the mix.

Wotja X is a new cross-platform interface for the 'Wotja Generative Music System'.

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

BTS FX emerges as a dynamic multi-effect plugin, incorporating a diverse set of modules.

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

Oriental Strings is a professional sound module app for oriental keyboard players and for musicians who simply want to resemble the typical sound of the Middle East in their songs.