This messenger let's you emit the message in the dark by shaking your iPhone in the air. It's experimental yet fun way to say something to the crowd, or to somebody on the other side of the dark room.
It uses accelerometer to accurately synchronise displaying rate with your arm movement.
It's second app in #NewAppEveryWeek challenge, which you can track on Twitter.
Up to six family members will be able to use this app with Family Sharing enabled.