Privacy

Slopculator collects nothing about you. It has no accounts, analytics, ads, cookies or tracking, and it never sends your calculations anywhere.

What stays on your device

Your lines, saved sheets, history and settings are kept in your browser's local storage, on your device. They leave it only when you export a file, copy, or share something yourself. Clearing this site's data in your browser deletes them.

What the app sends

Nothing. Once the page has loaded it makes no network requests: no fonts, scripts or images from other sites. In a link that ends in #q=sqrt(2), the calculation sits after the #, and browsers never send that part to a server.

Hosting

The website is served by Cloudflare. To deliver a page and block attacks, Cloudflare handles your IP address, your browser's name and the address you asked for, like any web host. Its privacy policy covers that data.

We don't get a log of visitors, and Cloudflare's visitor analytics stays off. Cloudflare's dashboard shows us totals, such as how many requests came in and from which countries, but nothing about any one person.

If Cloudflare decides a visit looks like an attack, it may show a check and set a cookie, cf_clearance, that records only that you passed it.

Source code and downloads

The code and the downloadable file are on GitHub, which has its own privacy statement. The downloaded file works like the website: it makes no requests and keeps everything in the browser that opens it.

Changes and questions

If this ever changes, this policy will say so, with a new date, before the app collects anything. Every past version is public in the repository.

Questions go to the issue tracker.

Last updated 15 November 2026.