Which language learning app became the first in its industry to reach a $1.5 billion valuation (unicorn status) in 2015, largely due to its gamification approach and freemium model?

The language learning industry has seen remarkable growth in the digital age, with several apps achieving unprecedented success. Behind these apps are fascinating business strategies, partnerships, and market insights. Test your knowledge about one of the most significant success stories in language learning technology that revolutionized how millions approach language acquisition worldwide.

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Duolingo
Babbel
Rosetta Stone
Memrise