We never send your data out over the internet. Period. Everything runs locally on your PC with your CPU and RAM resources. Having said that, Monkey Tools does make internet calls when Excel is launched, or when you choose to send us feedback. Those calls are made to the following websites: At startup we contact excelguru.ca to see if there are any new updates to the Monkey Tools software. At startup and when activating a license, we contact soraco.com (our licensing engine) to make sure you get any Pro features you are entitled to. The “Retrieve/Manage my License” feature will open your default web browser to the Excelguru Web Store at excelguru.onfastspring.com. Submitting a bug report or new feature request will open your default web browser to a form hosted at forms.microsoft.com.