Last updated: June 29, 2026
Privacy Policy
We collect as little as possible. This page explains what stays in your browser, what we never store, and the limited analytics we use to keep the site healthy.
Data that stays in your browser
Calculator history, your preferred language, and view preferences are saved in localStorage on your device. They are never sent to our servers and never shared.
What we don't collect
No accounts, no email addresses, no IP-based profiles. We don't sell or share any personal data because we don't have it.
Anonymous analytics
We use Vercel Analytics to count page views and load times. It does not use cookies and does not identify individual visitors.
Questions
If anything here is unclear, email hello@mathcalculator.app and we'll explain it in plain English.