Which language learning platform's logo redesign in 2019 caused significant user backlash, with many claiming the new minimalist design lost the brand's playful identity?

Test your knowledge of brand identities in the language and linguistics world! Many language learning platforms and linguistic tools have distinctive logos that have become recognizable symbols in the industry. This poll challenges you to identify which famous language-related logo underwent a significant transformation that sparked user backlash. Can you distinguish genuine rebranding controversy from fictional design changes?

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Duolingo's transition from the detailed owl mascot to a simplified green owl silhouette
Babbel's change from a speech bubble logo to abstract sound waves
Rosetta Stone's shift from the ancient tablet imagery to a modern geometric pattern
Grammarly's rebrand from the cursive 'G' to a minimalist grammar check symbol