Earlier this year in April, Duo looked a little ‘sad and tired’ with ... latest version of the Duolingo app downloaded, they ...

The nagging goes beyond email subject lines and push notifications; inactive users might look down at their phones to find that the Duolingo app icon suddenly depicts a sadder and older version of ...

The Duolingo mascot, Duo, unceremoniously killed off in a move that left social media reeling. The app icon went dark, the push notifications stopped and fans mourned the loss of their passive ...