Harken 是一个 Spotify 工具，可以让你找到你认为在生成的播放列表中丢失的所有歌曲。不记得您在播放列表中听到的那首歌的名称并且无法在播放列表中找到它？让 Harken 为您找到它！

The Harken Chrome extension helps you remember every article you read online. With just one click, you can generate multiple-choice questions to self-test the articles. Then, add your favorite questions to the Harken interval repetition app so that you can remember them forever.