While Duolingo jokes its mascot was born in 1000 BC, Duo actually debuted in 2011, the year the app launched, according to Apple Developer. But Duo looked different then. The original Duolingo logo ...

The language learning app Duolingo made a major announcement on Tuesday. Its owl mascot Duo, who is both loved and feared by Duolingo users, has passed away. “It is with heavy hearts that we ...