Privacy Policy

Last updated: October 2, 2026

CalcFin ("we") provides free financial calculators that run entirely in your browser. This policy explains what data is — and is not — collected.

1. Your numbers and inputs

We never see your inputs or results. Every calculation happens locally on your device. Nothing you type is sent to any server, stored, or logged.

2. Server logs

Our hosting provider (Cloudflare) automatically records standard technical request data — IP address, browser type, requested URL, timestamp — for security and performance. This data is governed by Cloudflare's privacy policy and is not used to identify individual visitors.

3. Cookies and advertising

We plan to display advertising served by Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on prior visits. You may opt out of personalized advertising via Google Ads Settings, or control cookies in your browser — blocking cookies does not affect the calculators.

4. Local storage

We may use local storage to remember preferences such as dark mode. This stays on your device.

5. Not financial advice

Results are mathematical estimates for education and planning. They are not financial advice — consult a qualified professional for decisions.

6. Contact

Questions: liuyulong667@gmail.com.