[suhas_oodi]

The app collates your phonebook/Facebook contacts and you can create your own groups! You can create groups for people who are good friends, besties or acquaintances. So when you're making a plan to do something, you can send out an invite to whichever group you choose. At that point, invites are sent out randomly (you can also choose instead to handpick who you invite) to those in that group. It's kind of like social potluck. Let serendipity choose who you end up hanging out with.