The original HackaDoll app delivers a customized feed of news for each user. The user answers some simple questions when launching the app for the first time, and then the app will filter the news that caters to the user's personal interests — boys love (BL), cosplay, anime, manga, games, light novels, voice cast members, and more. With daily use, the app automatically analyzes and learns which news articles the user reads and recommends to further personalize the feed.

[Source: Crunchyroll]