Privacy Policy

We collect almost nothing. Every calculation runs in your browser, so the numbers you type never leave your device. They never touch our servers.

Analytics is Cloudflare Web Analytics: no cookies, no cross-site tracking, no fingerprinting. We see aggregate page counts and nothing that identifies you.

What we store

Almost nothing, by design. The calculators keep your inputs in your own browser only, so you can share a scenario link — the numbers live in that link, not on a server we control. If you join the newsletter, we store your email address and nothing else. If you write to us, we keep the message so we can reply. That is the entire database.

What we never do

We never sell personal information, never share it with advertisers, and never build profiles of visitors. There are no third-party ad trackers on this site. If that ever changes, this page changes first and the change will be announced here, not buried.

Your rights

Under GDPR and CCPA you can ask what we hold about you, ask us to delete it, or opt out at any time. For newsletter email that is a single unsubscribe click in every message. For anything else, write to the address below and it will be handled by a human — the same human who built the site. Also see our terms of use and methodology.

Disclaimer

All calculators on SumCrafter are for educational purposes only. They are not financial, tax, or legal advice. The formulas are simplified models, useful for planning but no substitute for a qualified professional.

Contact

Questions about this policy: [email protected].

Last updated: October 2026.

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