This application uses iCloud Documents to allow you to share your data across your devices. Beyond iCloud this application does not communicate with any web services and does not transmit data except where Apple does so for the delivery of its services.
This application analyzes your data to build the navigational experience it provides you and that data remains on your device, bundled with your data. When you export your data, those analytics are bundled with your exported data and the privacy of that data thusly depends on your efforts to secure your exported .quy or .quill files.
Put simply, I we don't use marketing analytics, data services except iCloud, or consume your data, except where Apple does so to deliver its services.