Privacy Policy
Last updated: September 15, 2026
This page describes what Calculators Hub actually collects today — not a generic template. It will be updated as the site changes (for example, when advertising launches).
What we collect to run the site (always on)
A session cookie and, if you create an account, an authentication cookie — both required for the site to work at all (staying logged in, saving calculations, security). These are "strictly necessary" and don't require consent under privacy law, and we don't use them for anything beyond making the site function.
Analytics — Yandex Metrika (Russian version only, only with your consent)
On the Russian-language version of the site, we use Yandex Metrika to understand which calculators are useful. It is never loaded until you click "Accept all" or turn on "Analytics" in the cookie banner (see the "Cookie settings" link in the footer of any page) — if you reject or ignore the banner, it simply never runs. Yandex Metrika can set its own cookies once active; see Yandex's own privacy documentation for details on what it collects.
AI Calculator Assistant (only if you use it)
If you use the AI Calculator Assistant (the "Describe what you need calculated" page), the text you type is sent to a third-party AI provider (apinet.cloud) solely to identify a calculator and extract numeric inputs from it — it is never used to answer questions or hold a conversation. Processing now happens in a background queue on our server (this does not change who the text is sent to, or how much data is kept or for how long — only how the request runs); in the browser this shows as a status line with a "Cancel" button. Your submission (the text, the AI's response, and technical details like which calculator it matched) is also logged on our own server, to improve matching accuracy and prevent abuse; these log entries are not automatically deleted today. Using any other calculator on this site does not involve this at all.
No advertising yet
This site does not currently show ads. If that changes, this page will be updated first, and any ad-related cookies will be added as their own opt-in category in the cookie banner — not folded silently into "necessary."
Changing your choice
Your cookie choice is stored in your browser's local storage (not shared with anyone) and expires after about 6 months, at which point you'll be asked again. You can change it any time via the "Cookie settings" link in the footer.
Contact
Questions about this page or your data: vladis.tl.0880@gmail.com.