Which language learning platform launched with the famous tagline 'The free language-learning app that actually works'?

Marketing slogans and taglines often transcend their commercial origins to become part of our everyday vernacular and linguistic landscape. Some language-focused brands have created particularly memorable taglines that highlight their mission of communication, translation, or language learning. Test your knowledge of how language-focused companies have marketed themselves through clever wordplay and memorable phrases that emphasize their linguistic expertise.

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Duolingo
Rosetta Stone
Babbel
Memrise