Privacy

CalcViz has no accounts, no sign-up and no database of users.

Calculations

Every derivative, integral, limit, sum and graph is computed by JavaScript in your own browser. The expressions you type are not sent to us.

Recent problems (local storage)

To let you jump back to recent problems, the calculators save your last few inputs in your browser’s local storage under the key calcviz:history. This never leaves your device. Clear it here, or with the “Clear” link under any calculator:

Clear my saved history

AI tutor

The tutor only runs when you press one of its buttons. It then sends your question and the problem shown on screen (the function, answer and steps) to an AI model through Vercel’s AI Gateway to generate the explanation. We don’t store these requests, and we don’t attach any identity to them. A per-connection rate limit uses your IP address briefly in server memory to prevent abuse.

Analytics

We use Ahrefs Web Analytics to count page views. It is cookieless and doesn’t collect personal data.