Game of Tongues: How Duolingo Built A $700 Million Business With Its Addictive Language-Learning App – Forbes

Game of Tongues: How Duolingo Built A $700 Million Business With Its Addictive Language-Learning App  Forbes

Beg for your life in Spanish,” demands Duo, a plump green owl. The viral meme circulating on Twitter stars the mascot for Duolingo, the hugely popular …

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