Sandcastle - your friends are your BnB

You have hundreds of friends, and they have hundreds of friends too. What are the chances that someone can offer you a place to sleep in the place you are traveling to?

Sandcastle is a way to share a trip you are making with your friends. Anyone who could help you find a place to sleep will get a notification to send you a message if they can help you.

Profiles are private, so nobody can see each-other's houses.