Privacy
How DatumLab handles your data: every calculation runs in your browser and nothing you enter is sent anywhere.
What stays on your device
Every measurement, tolerance, and feature size you enter is processed in the page itself. None of it is transmitted to a server, because there is no server side to this tool: the site is a set of static files.
Two items are written to your browser's local storage so your work survives a reload: the workspace inputs under the key datumlab.workspace.v1, and your saved cases under datumlab.cases.v1. Both are readable and removable from your own browser settings, and clearing site data removes them permanently. The export button writes a JSON file directly to your device and uploads nothing.
What we collect
No account, no sign in, no advertising identifiers, and no analytics of the values you enter. Standard web server logs kept by the static host may record the request for a page, its time, and a network address, in the ordinary way that any web server records a request.
Page counts
This site counts page visits through Cloudflare. The count sets no cookie, it cannot follow you from here to another site, and nothing you enter in the tool is part of it. It records that a page was opened, not what you typed into it.
Cookies
DatumLab sets no cookies of its own, and it carries no advertising or cross site tracking scripts. The Cloudflare page count described above is cookieless.
Children
The site is a technical study aid and is not directed at children under 13.
Changes and contact
If this policy changes, the updated version will replace this page. Questions about privacy or a request to have something explained: [email protected]