Privacy Policy

Version / effective date: 2026-10-27. This is an English version of the Korean privacy policy, which is the governing text.

CalcSpin (“the site”) is operated by 디에이치소프트 (“the operator”), a business registered in the Republic of Korea. The site has no sign-up or log-in.

1. What you type into the tools

Amounts, dates, names and lists you enter are processed only inside your browser. They are not sent to our servers and are not stored anywhere. They disappear when you close or reload the page. A wheel “share link” carries the entries in the link address itself and reaches others only if you copy and send it.

2. Information processed automatically

• Access logs: when you visit, the hosting server (Vercel) automatically records your IP address, the time, the page requested and browser information. These are used only for security and troubleshooting and are kept according to Vercel’s retention policy.
• Visit statistics: Vercel Web Analytics, which does not use cookies, counts page views, referring domain, country, and device and browser type. It does not store cookies that identify you and never receives what you type into the tools. No other analytics or tracking tools are used.

3. Cookies

The site currently does not store cookies.

Planned advertising: the operator plans to show display ads such as Google AdSense and Kakao AdFit. Ad providers may then use cookies or device identifiers to deliver ads, measure performance and prevent invalid clicks, and may show interest-based ads. Before ads start, this policy will list the ad providers, what they process and how to opt out, and the change will be announced 7 days before it takes effect. You can block or delete cookies in your browser settings and turn off personalized ads in Google Ads Settings (adssettings.google.com).

4. Service providers and transfer abroad

• Vercel Inc. (USA, privacy@vercel.com): website hosting, access logs and cookie-free statistics. Data is transferred over the network when you visit; retention follows Vercel’s policy.
• Google LLC (USA and elsewhere): if you email us, your address and message are received and kept in Gmail for 3 years.

Visiting the site always goes through these servers, so if you do not want this transfer, please stop using the site.

5. When you contact us

If you email us, we use your email address and message only to reply, and delete them after 3 years.

6. Sharing with third parties

We do not provide personal information to third parties except where the law requires it.

7. Your rights

You can ask to see, correct, delete or stop processing the personal information we hold about you (mainly contact emails). We act within 10 days of your request and tell you the result.

8. Security

• The tools are built so that what you type never reaches our servers.
• All traffic is encrypted with HTTPS.

9. Contact

Privacy officer: 하정도 · sseuda.help@gmail.com, 070-8098-6155

10. Changes

Changes to this policy are announced on the site 7 days before they take effect.