Wildcard is the equivalent of a dating app for networking. You create a "card" which shows who you are and what you are looking for, and then you browse other people’s cards and select whether you're interested in meeting. If two people both want to meet each other, their cards goes into each person’s virtual Roledex.
And you can also join and create "decks," which are collections of people based on events or locations, and serve as a shortcut to finding potential connections.
Price: Free (iOS, Android)