Duolingo is one of the most popular apps on the Play Store, but oddly, its social features have been a bit on the light side up to now. The latest update to the language learning service aims to alleviate that with Duolingo Clubs. The feature is pretty much exactly what it sounds like: users (or "players" as Duolingo likes to call them) can congregate into social clubs to keep track of each other's use of the app and progress though the guided, game-style courses.

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