Birthday Twin is a birthday card app that matches any birthday with famous people born on the same day.

How to use

1. Enter a recipient's name
2. Select their birth month and day
3. Tap Generate Card to see their birthday twins
4. Tap any name to learn more, or tap AI Insights for a personalized message
5. Tap Share to share an interactive web card, a revealed AI insight, or the original card image.

Contact

Questions or feedback? Email us at [email protected].

Privacy Policy

Effective August 12, 2026

• Birthday Twin does not require an account and does not use advertising, third-party analytics, or tracking technologies.
• The recipient name and birth month and day entered in the app are processed on the user’s device to generate a birthday card. The app stores limited information locally on the device, such as usage and purchase-unlock status.
• Interactive sharing: When a user chooses to share an interactive card, Birthday Twin creates a web link containing the recipient’s name, birth month and day, selected birthday-twin information, and—only if the sender has revealed it—the AI insight. This information is encoded in the complete URL, but it is not encrypted. Anyone with the complete link can view and forward the card. Users should only share information they have permission to share.
• Birthday Twin does not maintain a user account or store a database copy of shared cards. The card is decoded in the recipient’s browser. However, the link may remain in messaging applications, email, browser history, or other services selected by the sender or recipient, subject to those services’ privacy policies.
• In-app purchases are processed by Apple. Birthday Twin does not receive users’ payment card information.
• Because Birthday Twin does not retain a server-side copy of a shared card, it cannot remotely revoke or delete a link that has already been sent. Users can delete local app data by removing the app, but recipients may retain copies of links or images they have received.
• If you have questions about this policy, contact us at the email above