Privacy Policy

Short answer

This calculator runs entirely in your browser. We do not collect, store, or transmit any information you enter into it. There are no analytics, no cookies, no third-party trackers, and no user accounts.

What stays on your device

To let you save work between sessions, the app uses your browser's localStorage. Values are namespaced under efc:v2:* and are used only by this app:

• Current calculation — the last state of your active session so you can close the tab and come back.
• Saved history — any calculations you explicitly save.
• Locale / settings — your preferred language and small UI preferences.

These values persist on your device until you clear your browser data or use the in-app delete / reset controls. They are never sent to us or to any third party.

What leaves your device only if you choose

The app gives you three ways to move your data. Each is user-initiated:

• Export to JSON — saves a file to a location you pick.
• Import from JSON — reads a file you select; nothing is uploaded.
• Shareable link — encodes your entire calculation into the URL itself. Anyone you give that link to can reconstruct every input you entered. Treat share URLs like the underlying data — don't post them publicly if the inputs are sensitive.

Hosting & web-server logs

The site is served as static files by our hosting provider. Like most websites, the provider may automatically log standard web-request metadata (IP address, user-agent, timestamps, requested paths) for abuse prevention, diagnostics, and uptime. We don't combine those logs with anything you type into the calculator because the calculator never sends anything to the server.

Service worker & offline cache

The app installs a service worker so it continues to work offline. The cache holds app code only — HTML, CSS, JavaScript, images. It does not contain anything you've entered.

Children

The tool is not directed at children under 18. Estate planning inputs can touch on other people's circumstances — please do not enter personal data about third parties without their consent.

Changes to this policy

We may update this policy. Material changes will be reflected in the "Last updated" date at the top of this page.

Contact

Questions or concerns about this policy: contact@example.com.