Privacy Policy
Last updated: November 1, 2026
This page explains what information Calciyums collects while you use it, why, and how you can control it.
What we collect
- Account (optional): your email address and language preference. Your password is never stored as plain text; it's hashed in a way that can't be reversed.
- Favorites and My Toolbox: the tools you've favorited or recently used. Kept in your browser until you sign in, then moved to your account.
- Shared calculations: when you share a result as a link, the values you entered are stored on the server under a random code, and anyone with that link can see them — keep that in mind when sharing something like a salary or a loan calculation.
- Usage statistics: anonymous data like which tools get opened and what people search for, collected on our own servers with no third-party tracker involved. A search or tool request that looks like it contains personal information (an email, a phone number, a link) is never saved.
- Tool requests: the suggestion text you submit (same restriction as above — it can't contain personal information).
Cookies and local storage
- toolbox_session (necessary, HttpOnly): keeps you signed in.
- toolbox_auth (necessary): lets the browser know you're signed in without asking the API.
- Your theme preference and cookie choice live only in your browser (localStorage) and are never sent to a server.
- Google Analytics and Google AdSense cookies only run once you've given the consent described below.
Google Analytics and Google AdSense
We use Google Analytics to understand how the site is used, and Google AdSense to show ads. Both only place cookies on your device, and only personalize ads or measurement, once you've given cookie consent. You can read how Google uses this data at policies.google.com/technologies/partner-sites.
You can change your choice at any time from the “Cookie preferences” link at the bottom of this page.
How long we keep it
- Search text is deleted entirely after 180 days; only summary counts are kept indefinitely.
- Expired sessions and email-verification or password-reset links are deleted automatically.
- Deleting your account permanently deletes your account details, favorites and share links.
Your rights
You can delete your account entirely, at any time, from your account settings — this happens immediately and can't be undone. For any other request about your data, contact us at the address below.
Children
Calciyums isn't directed at children, and we don't knowingly collect data from them.
Changes
This policy may change from time to time; the date at the top of this page is updated whenever it does.