Fleek

Fleek is an app to send text messages and make video calls with your friends. But even if you don't have friends who use this app yet, you can still enter one of the open channels where you can find other users to talk to. You can also watch other people's video streams on these channels.

When you go into a chatroom, you can either write a comment, or start streaming video right away. You can also watch other people's videos live, switching between them by tapping twice on the image.

Besides all that, Fleek could really be a much better social app than it is. The interface isn't particularly intuitive, for instance, and there are still lots of stability issues with the app. Not only that – the user community doesn't seem to be very welcoming, either.