Privacy Policy
Last updated: January 1, 2025. We are committed to protecting your privacy and being transparent about our practices.
1. Overview
PercentageFormula ("we," "us," or "our") operates the website at percentageformula.com (the "Site"). This Privacy Policy explains how we collect, use, and protect information when you use our Site.
2. Information We Do NOT Collect
All percentage calculations on PercentageFormula run entirely within your web browser. The numbers you enter into our calculators are never sent to any server, stored in any database, or transmitted to any third party. We do not:
- Collect personally identifiable information
- Store calculator inputs or results
- Require account creation or login
- Use local storage for calculator data
- Track individual user behavior
3. Automatically Collected Information
Like most websites, our web server and Cloudflare infrastructure may automatically collect standard log data when you visit the Site. This may include:
- Your IP address (anonymized by Cloudflare)
- Browser type and version
- Pages visited and time spent
- Referring website
- Date and time of your visit
- Country of origin (not city or precise location)
This information is used solely for aggregate analytics (understanding which calculators are most popular) and for maintaining security and performance of the Site.
4. AI Chat Feature
When you use our AI Chat feature, your messages are sent to our Cloudflare Worker, which forwards them to the Groq API for processing. Your messages are used only to generate a response and are not stored, logged, or used for training. Groq's own privacy policy applies to data processed through their API.
5. Cookies
PercentageFormula uses minimal cookies:
- Theme preference — remembers your dark/light mode choice (localStorage)
- Language preference — remembers your EN/AR choice (localStorage)
- Analytics cookies — Cloudflare may set anonymous analytics cookies
You may disable cookies in your browser settings without affecting the core functionality of our calculators.
6. Advertising
This Site may display advertisements served by third-party networks such as Google AdSense. These networks may use cookies and tracking technologies to serve relevant ads. We do not control the data collection practices of these advertising providers. Please review Google's Privacy Policy for information on how they handle data in advertising contexts. You can opt out of personalized advertising at aboutads.info.
7. Cloudflare
Our Site is hosted on Cloudflare Pages. Cloudflare acts as our CDN and security provider and may collect anonymized traffic data to deliver our services. Cloudflare's Privacy Policy is available at cloudflare.com/privacypolicy.
8. Third-Party Links
Our Site may contain links to external websites. We are not responsible for the privacy practices of those sites and encourage you to review their privacy policies before providing any personal information.
9. Children's Privacy
PercentageFormula is a general-purpose math tool suitable for all ages. We do not knowingly collect personal information from children under 13. If you believe a child has submitted personal information through this Site, please contact us and we will promptly delete such information.
10. Data Security
Since calculator inputs are never transmitted to our servers, the risk of data exposure is minimal by design. The Site is served over HTTPS via Cloudflare, which provides SSL/TLS encryption and DDoS protection.
11. Your Rights
Since we do not collect personal data, there is typically nothing to access, correct, or delete. However, if you believe we hold any information about you, please contact us and we will investigate promptly.
12. Changes to This Policy
We may update this Privacy Policy from time to time. Any changes will be reflected on this page with an updated "Last Updated" date. Continued use of the Site after changes constitutes acceptance of the updated policy.
13. Contact Us
If you have questions about this Privacy Policy, please contact us at:
- Email: privacy@percentageformula.com
- Website: percentageformula.com