NestMathPrivacy Policy
Last updated June 2026
The short version
Every calculation runs in your browser. The numbers you type into a calculator are never sent to a server, never stored by us, and never shared or sold. There are no accounts and no logins. You can use the entire site without giving up any personal information.
What stays on your device
Some tools, like the Dashboard, let you save a snapshot of your results so they're there when you return. Those snapshots are written to your browser's local storage on your own device. They are not transmitted anywhere. You can delete them at any time with the "Clear all data" button on the Dashboard, or by clearing your browser's site data. On a shared or public computer, clear your data before you leave.
Analytics
We use Vercel Web Analytics to understand which pages are visited and roughly how the site performs. It is privacy-friendly by design: it does not use cookies, does not build a profile of you, and does not track you across other websites. It collects aggregate, anonymized data such as page views, referring site, and general device type. It does not receive the values you enter into any calculator. You can read more in Vercel's analytics privacy documentation.
Cookies
NestMath does not set advertising or tracking cookies. Your theme preference and any saved snapshots are stored in local storage on your device, not in cookies sent to a server.
Third-party links
The site links to outside services such as Ko-fi, GitHub, and LinkedIn. Once you follow a link to another site, that site's own privacy policy applies. We don't control how they handle your data.
Children
NestMath is intended for a general adult audience and is not directed at children under 13. We do not knowingly collect personal information from anyone, including children.
Changes and contact
We may update this policy as the site evolves. Material changes will be reflected in the "last updated" date above. The site is operated by ArcLayer LLC. For questions, reach out through the GitHub repository.