Last updated: December 9, 2025
1. Information We Collect
a. Anonymous Usage Statistics (No Personal Identifiable Information)
- Device type: Mobile, tablet, or desktop (no device ID)
- Country: Derived from IP address, but IP address itself is NOT stored
- Language preference: Browser language setting
- Calculation data: Selected products, total spending amounts (anonymous)
- Usage patterns: Share counts, view counts (aggregated)
Important: We do NOT collect or store:
- IP addresses (converted to country code only, then discarded)
- Personal names, email addresses, or contact information
- Precise location data
- Device identifiers or advertising IDs
b. Information Collected Through Third-Party Services
- Google AdSense: Cookies and user behavior data for ad targeting
- Google Analytics: Anonymized usage statistics for website analysis
2. How We Use Your Information
- Providing and operating website services
- Displaying personalized advertisements (Google AdSense)
- Analyzing and improving website performance
- Enhancing user experience
- Security and fraud prevention
- Complying with legal obligations
3. Data Retention Period
- Local Storage Data: Until user clears browser data
- Calculation Results: 90 days (automatically deleted)
- View Logs: 180 days (automatically deleted)
- Google AdSense Data: According to Google's policy (up to 26 months)
- Analytics Data: 26 months (Google Analytics default setting)
4. Information Sharing with Third Parties
Collected information may be shared with the following third parties:
- Google: For AdSense advertising services and Analytics
- Legal Requirements: When required by court orders, law enforcement requests, or other legal obligations
5. Cookies Usage
a. Essential Cookies
- Cookies necessary for basic website functionality
- Security and fraud prevention cookies
b. Analytics/Advertising Cookies
- Google AdSense advertising cookies
- Google Analytics cookies
- Cookies for user behavior analysis
6. Your Rights
You have the following rights regarding your personal information:
- Request access to information about personal data processing
- Withdraw consent for data collection and processing
- Refuse cookies through browser settings
- Delete local storage data (clear browser data)
- Modify Google ad settings: https://adssettings.google.com
7. Children's Privacy
This website is not directed to children under 13 years of age. We do not knowingly collect personal information from children under 13.
9. Changes to This Privacy Policy
This privacy policy may be updated to reflect changes in applicable laws and policies. Any changes will be posted on this page with an updated "Last updated" date.