DieVinci runs entirely in your browser. There is no account and no server - your dice designs stay on your device.
Your dice sets are stored locally in your browser (localStorage) and never uploaded anywhere. Clearing your browser data removes them.
Designing and exporting STL files happens on your device; your designs are never sent to a server.
I use Google Analytics to collect aggregate usage statistics (such as page views and which features are used) so I can improve the tool. This sets cookies and collects standard analytics data (for example device, browser, and approximate region). It never includes your dice designs, and I do not show ads.
When you choose a Google font, its file is fetched from Google's servers (fonts.gstatic.com) to render and engrave your design - so Google receives that request (your IP address and which font), the same as any website that uses Google Fonts. The bundled fonts and icons ship with the app and are not fetched from anywhere. No dice designs are ever shared.
Questions? Reach out via the contact link in the footer.