Privacy Policy
We keep this simple. There are no accounts, no sign-ups, and no advertising trackers. Here is exactly what happens to your data.
Stays in your browser
Your recent queries (history) and your selected country are saved locally in your browser using localStorage. They never leave your device and we can't see them. Clear them any time by clearing this site's data in your browser.
Sent to our server
When you run a calculation, the text of your query and your selected country are sent to our server so it can compute the result. We use them only to return your answer and to keep anonymous, aggregate usage statistics (for example, counts and response times). We don't build profiles or try to identify you.
AI help for queries we can't read
If your query isn't in a form the calculator understands, we ask an AI model to rewrite it into our calculator's syntax and then compute that. Only in that case is the text of your query sent on to OpenRouter, which routes it to the model provider serving the request; their handling of it is governed by their own policies. Queries the calculator understands on its own never leave our server. When a rewrite is used, the page shows you the expression we actually calculated.
Cookies
None. The calculator doesn't set cookies.
Third parties
- Exchange rates come from the Central Bank of Russia and the European Central Bank. We fetch these ourselves, so using the calculator doesn't share your data with them.
- The page loads the Inter font from Google Fonts, which means your browser contacts Google's servers to download the font.
- OpenRouter receives your query text only when the calculator can't read it on its own, as described above.
Questions
If anything here is unclear, reach out via the contact page.