Privacy Policy

This policy explains what limited information 4DFast collects and how it is used.

What we collect

We keep things minimal. If you subscribe to number alerts, we store the email address and numbers you provide, solely to send the alerts you requested. Your watchlist numbers on the "My Numbers" page are stored only in your own browser and never sent to us unless you subscribe to alerts. Standard web-server logs (IP address, browser type, pages visited) may be recorded for security and performance.

Cookies & local storage

We use a session cookie for site functionality and your browser's local storage to remember your theme choice and saved numbers. If advertising or analytics are enabled, those third-party services may set their own cookies; see their respective policies.

How we use it

Your email is used only to deliver the alerts you opted into and to let you unsubscribe. We do not sell, rent or share your personal data with third parties for marketing.

Your choices

Every alert email contains an unsubscribe link that removes your data immediately. You can clear your saved numbers any time by clearing your browser storage.

Contact

For privacy questions, use the contact details on our About page.

Last updated July 2026.