Booyah is a new group video chat app for WhatsApp by the creators of Rounds. It’s available on both Android and iOS. It can provide group video chat to seamlessly connect to other messaging apps like Line, Kik, Facebook Messenger, and Twitter. Simply install the app, there is no additional registration, then invite 1-on-1 or up to 12 friends to the group, chats will re-size appropriately to fit the screen.