Privacy Policy

1. Personal information we collect

Calculy has no sign-up flow. We don't ask for or directly collect names, emails, phone numbers, or any other information that could identify you.

2. Technical information collected automatically

Our hosting provider, Vercel (Vercel Inc., USA), records standard server access logs. These may include:

• IP address
• Date and time of the request
• User-Agent (browser and device)
• Referrer URL

3. Browser storage we use

We store the following on your device for usability. Nothing here leaves your browser, and you can clear it any time from your browser settings.

• Theme preference (localStorage key calculy.theme) — remembers light/dark mode.
• Language preference (NEXT_LOCALE cookie) — picks Korean/English automatically.

4. Tool input

Anything you type into a calculator (text, numbers, dates) is processed locally in your browser. It is not sent to a server, and refreshing the page clears it.

5. Sharing with third parties

We do not sell or share the technical information above for marketing. Only essential operational processors (hosting / CDN, namely Vercel) handle requests on our behalf.

6. Possible future services

If we add advertising (e.g., Google AdSense) or analytics in the future, we'll update this policy to disclose the cookies/identifiers those services use. Until then, no tracking happens.

7. Your rights

Because we don't hold identifiable personal data, there's no separate access/correction/deletion process. Items stored in your browser can be cleared by you directly.

For anything else, please reach out via the email below.

8. Changes to this policy

If this policy changes, we'll update the "Last updated" date at the top. We'll try to announce material changes in advance.