Cardbox reimagines the address book as a social network. It’s the one central place to stay connected to the people in your life, without all the noise. No posts, no likes, no ads; just contacts. Manage only your own card, and subscribe to each other’s contact information with just one tap.
The idea is simple but powerful: If you meet someone at a meetup or conference it's always fun to connect with them on social media, e.g. Twitter, but then you miss out on being able to DM them anywhere else unless you ask them what chats they use.