Momo, the Chinese location and interest-based social app, has filed for IPO to raise US$300 million. The Momo IPO will, like many Chinese tech stocks, be in the U.S. Widely known as a mobile app with location-based features for connecting strangers, Momo is now transforming into an interest-based social platform. It has also been adding services for businesses to interact with Momo users. Momo claims it is the third most popular social apps in China, after Tencent’s WeChat (or Weixin) and Mobile QQ.