play-by-sports, also known as プレイバイスポーツ, is a sports live streaming and interaction app that allows users to cheer and watch sports events on their smartphones. Users can support their favorite teams while watching actual game footage for free. Various hosts, ranging from former professionals to idols and comedians, engage in sports live streaming for fans of all kinds.

With play-by-sports, anyone can participate in sports live streaming, from former pros to regular fans. Viewers can support a game alongside different types of hosts while predicting the game's progress in real-time through interactive voting. The app offers a diverse lineup of matches, including those from teams like Yokohama DeNA BayStars, Saitama Heat Bears, and My Navi Next Heroine, with more content continually being added.