Ops, built with AudioKit

Ops is a modular synthesiser designed to make it easy to create and explore sound interactively with a touch screen. Ops does away with patch cords, instead using a system of connected blocks with a clear signal flow.

The blocks, called ops, are joined together into structures by dragging and dropping them on screen. Structures can easily be copied and varied to build-up rich, interesting results.

There are ops to perform a wide range of functions, including interaction, signal generation, effects processing, control, audio input, MIDI input, and pitch and rhythm manipulation.

Website: http://jonathanmackenzie.net/ops/
iTunes: https://itunes.apple.com/us/app/ops/id1140110361