CutePlots builds charts on your device. Worksheet values, chart labels and titles are not uploaded to our servers.
No chart database or upload is involved. A share link contains a snapshot of the chart and its data in the part after #. A shared HTML file carries its data inside the file. Anyone with the full link or file can read that data. Hiding the data table does not remove it.
Loading the add-in or viewer needs a web connection. License checks send your key, a generated installation identifier and the add-in version. Website and redirect visits can record ordinary connection and click information. Your worksheet data is not part of those requests.
Read the CutePlots Add-in privacy policy for local storage, licensing, sharing and website details.