Knocking Live Video is a free video-sharing app for iPhone, and now for Android, that broadcasts live video from one smartphone to another. Qik can be public or private , whereas Knocking Live Video is currently only private, and Qik streams to the Internet. Knocking Live Video's niche is phone-to-phone broadcasting, which is inherently a private way to share when both parties have Knocking Live Video up and running on their phones.