The Monte Carlo Add In for SharePoint Online performs simulations using random number generation to provide a range of likely results and then graphs it in a user exportable format. This is a well known method of doing forecasting and can be applied to virtually any domain.
No, there is no data sent outside of the Site Collection or to the cloud. Data privacy is a our foremost concern and there is no need to make external connections of any sort for the app to work after installation.
Yes, our add-in is fully supported and we're ready to respond to bugs , deployment issues and other unplanned events. Our application architect and development team are engaged in a continuous cycle. of app development and deployment. We are also a small US based business and can do conference calls and demos based on our availability.