The video chat app that should scare the hell out of Facebook and Snapchat

It's rare that a small startup is able to challenge the likes of Facebook and Snapchat in a meaningful way.
But Houseparty, a teen-centric video chat app is managing to do just that. One year since launching publicly (the company spent several months in a stealthy beta), Houseparty has grown to 20 million users who together have participated in more than half a billion video calls (or "parties," to use the app's terminology).
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