Privacy

SumHatch Math works in your browser. We do not require an account or send the expressions you type to a calculation server.

Browser storage

We use local storage to remember your last graph and light or dark appearance on this device. Clear your browser’s site data to remove them. If storage is blocked, you can still use the calculator.

Graph links

When you select Share, the graph is encoded in the URL fragment. Anyone you give the link to can open its expressions and settings. The fragment is not included in the HTTP request to our server, but the full link can be visible to people or apps you share it with.

Hosting

Cloudflare serves this website and processes ordinary connection information, including IP addresses, to deliver and protect it. Our source code and deployment pipeline are hosted on GitHub. We do not currently run advertising or analytics trackers.

Last updated November 2026.