Privacy policy
Last updated November 13, 2026
No accounts
cucu.boo works without sign-up. A card stores only what you type into it: the recipient’s name, your name, your message and the chosen design. Each card has a public link for the recipient and a separate private edit link for you. Edit links are stored only as one-way hashes, and the edit links of cards you make are remembered in your own browser so you can find them again.
Payments
Payments are processed by Polar (polar.sh), our merchant of record. Polar collects your email address and payment details to complete the purchase and send a receipt. We never see or store your card number.
Who can see a card
Anyone with a card’s public link can open it. Card pages are not indexed by search engines. Link previews in messengers show only the recipient’s name.
Site analytics
Our sensor at fmsnsr.xyz records page visits and interactions such as starting a card, opening checkout, copying a link and opening a card. It uses a session identifier stored in your browser tab, without analytics cookies, and respects Do Not Track. We never send card messages, names or email addresses as analytics events, and private edit pages are not tracked.
Retention and your choices
We keep cards so their links keep working. To delete a card or ask about your data, email [email protected] with the card link.