Privacy Policy

Efficienco ("we," "us," or "our") provides free calculator tools at efficienco.com. This policy explains what information we collect when you use the site, how we use it, and the choices available to you. Using Efficienco means you agree to the practices described here.

Information we collect

None of our calculators require an account, a signup, or any personal information to work — every result is calculated directly in your browser from the numbers you type in. We do not ask for your name, email address, or payment details anywhere on the site.

We do collect a limited amount of information automatically, the way most websites do:

• Usage data — pages visited, time on page, referring site, device and browser type, and approximate location derived from your IP address.
• Cookies and similar technologies — used by our analytics and advertising partners, described below.

Local storage on your device

Each calculator can remember the numbers you last entered, so they're pre-filled if you come back. This is stored using your browser's local storage, directly on your device — it is never transmitted to our servers and we never see it. Clearing your browser data removes it. Using the "Reset" button on any tool clears that tool's saved values immediately.

Cookies and advertising

Efficienco is supported by advertising served through Ezoic. Ezoic and its advertising partners may use cookies and similar technologies to serve ads, measure ad performance, and personalize ads based on your browsing activity. Depending on your location, you may be shown a consent banner allowing you to control these preferences.

We also use analytics (such as Google Analytics) to understand how visitors use the site in aggregate — this helps us see which tools are useful and where to improve. Analytics data is anonymized/aggregated wherever possible and is not tied to your name or email, since we never collect either.

You can review Google's practices at policies.google.com/privacy, and Ezoic's at ezoic.com.

How we use information

The limited data described above is used to:

• Keep the site running reliably and securely
• Understand which tools are used most, to guide what we build next
• Serve and measure the advertising that keeps every tool free

We do not sell your personal information.

Your choices

You can block or delete cookies at any time through your browser settings. Most browsers let you view and remove local storage per site as well. Blocking cookies may affect ad personalization but will not affect your ability to use any calculator on the site — every tool works entirely without cookies or local storage.

Children's privacy

Efficienco is not directed at children under 13, and we do not knowingly collect personal information from children. If you believe a child has provided us with personal information, contact us and we'll remove it.

Changes to this policy

We may update this policy from time to time as the site or our tools change. The "Last updated" date at the top of this page will always reflect the most recent revision. Continued use of the site after a change means you accept the updated policy.

Contact us

Questions about this policy? Reach us at viaan@efficienco.com.