just a quote from them..
This module was designed to be a perfect integrator for any iOS device (besides iPhone VS1)
It allows to use any Sound App with the Modular audio chain, turning your iOS device into a new module for your system.
Using it with for ex. the Moog filtatron or the new CsGrain has proven to be very efficient! This last app “CsGrain” by Boulanger Labs is my personal favorite it allows granular sampling on the fly!!
It uses the iOS jack input to access the Line out and Microphone input.
It has two independent audio input with attenuators that mix down to a mono line which is then sent to the device through the microphone input.
It has 2 audio outputs that are the device’s Left/Right Line Out.
Each of these channels has an independent envelope follower with level and decay knobs and was designed with the intention of using Sequencer Apps to sync with the modular or even sequence modular occurrences.