Duolingo is ready for its namesake platform to go up an octave as the Pittsburgh-based company plans to open a waitlist for people to join so they can begin taking music lessons on its flagship app.

Duolingo has apologised after a user was left gobsmacked by a lesson that took aim at Harry Potter author JK Rowling. Founded ...

Duolingo remains among the most popular language learning apps and has steadily added new languages, including some that linguists worry could eventually disappear.