These add-ons are distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. They use Google Analytics to monitor usage. They will respect your browser setting to turn tracking off if you do not want your usage monitored.
Gathering of Personally-Identifying Information
Add-ons collect information only insofar as is necessary or appropriate to fulfill the purpose of the visitor’s interaction but does not store nor disclose personally-identifying information.
Sheet and Slide data
It is the function of these add-ons to organize or visualize data in your Google documents, so it needs access to your sheets to be able to do so. It does not store or otherwise transmit any of your private data. Occassionally they use the G-Suite Sheets and Slides API to access functions not natively available in Apps Script, and therefore make direct calls to Google API endpoints to enable this functionality.
Some add-ons whose function is to change data in your sheet or slide, will make those changes (for example inserting a diagram or sorting a sheet by color)