1. Introduction

Welcome to Easy Percentage Calculator ("we", "us", or "our"). We are committed to protecting your privacy. This Privacy Policy explains how we handle information when you use our website, easypercentcalculator.com (the "Service").

Our Service is primarily a client-side application, meaning most functionalities run directly in your browser. The numbers you type into the calculators are never sent to our servers.

2. Information We Collect and How We Use It

We utilize your browser's local storage and session storage to enhance your experience and provide core functionalities. We do not collect personal information that directly identifies you unless you voluntarily provide it (e.g., through a contact form, which is not currently part of this service).

• Theme Preferences: We use local storage to remember your preferred theme (e.g., light or dark mode) so that your choice persists across sessions. This is stored under a key like `easypercent-theme`.
• Calculation History: To help you recall previous calculations, we use session storage (key: `easyPercentageCalculatorHistory`). This data is stored only for your current browsing session and is automatically cleared when you close your browser tab or window.
• Last-used Country: The VAT calculator remembers the country you last selected (local storage key: `epc-vat-country`) so it is preselected on your next visit.
• Cookie Consent: We use local storage to remember your cookie consent preferences (key: `easypercent-cookie-consent`). This prevents the consent banner from appearing on subsequent visits once you have made a choice.
• Gemini Nano On-Device Demo: If you use the "Nano Demo" page, the AI model (Gemini Nano) runs directly on your device within your browser. Text you input into this demo is processed locally and is not sent to our servers or any third-party servers by us. Your browser might download the AI model components as part of its built-in functionality if you enable experimental features.

3. Analytics

We use Vercel Analytics to understand how many people visit the site and which pages they view. It is a cookie-free service that records anonymized, aggregated page-view data; it does not track you across websites and does not store identifiers on your device. Details are available in Vercel's privacy documentation.

The currency converter fetches exchange rates from the Frankfurter API when you use it. That request carries no personal data beyond what any web request includes (such as your IP address, seen by the API provider).

4. Cookies and Similar Technologies

While we don't use traditional HTTP cookies for tracking, we use Local Storage and Session Storage as described above. These are standard web technologies that allow websites to store information locally on your computer or mobile device.

• Local Storage: Used for persistent preferences like theme, last-used country, and cookie consent. You can clear local storage through your browser settings.
• Session Storage: Used for temporary data like calculation history, which is cleared when your session ends.

By clicking "Accept" on our consent banner, you agree to our use of local storage for theme and consent preferences. The use of session storage for calculation history is considered essential for the functionality of that feature.

5. Data Sharing and Third Parties

We do not share any information stored in your local or session storage with third parties. As a client-side focused application, your calculation data, theme preferences, and history remain within your browser. The only third-party services involved are the anonymized analytics and the exchange-rate API described above.

6. Your Rights and Choices

You have control over the information stored by our Service in your browser:

• Managing Local Storage and Session Storage: You can view, manage, and delete data stored in local storage and session storage through your web browser's settings or developer tools. Clearing this storage will remove your saved preferences (theme, consent) and current session history.
• Cookie Consent: If you wish to withdraw your consent after accepting, you can do so by clearing your browser's local storage for this site. The consent banner will reappear on your next visit, allowing you to make a new choice.

7. Children's Privacy

Our Service is not directed to individuals under the age of 13 (or a higher age threshold depending on your country). We do not knowingly collect personal information from children. If you believe a child has provided us with information without parental consent, please contact us.

8. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last Updated" date. You are advised to review this Privacy Policy periodically for any changes.

9. Contact Us

If you have any questions about this Privacy Policy, please contact us at privacy@easypercentcalculator.com.