Yes! Listful gives you full control over your privacy:
Make your account private: Go to your General Settings and switch your account to private. This keeps all your wishlists hidden from public view.
Make individual wishlists private: Click the Share button on a specific wishlist and select the option to make it hidden. Only people you share the link with will be able to view that wishlist.
With these options, you can control who sees your wishlists while still sharing them with friends and family.

