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Rosetta Stone vs Busuu: catalog facts
Rosetta Stone	Busuu
Paid Paid membership, with a free lesson to try first.	Freemium Free to start, with a paid subscription for full access.
Android, iOS, Web	Android, iOS, Web
Immersive lessons without relying on translation Speech recognition feedback on pronunciation	Feedback from a community of native speakers Pronunciation feedback in speaking practice
Requires a paid membership beyond the free trial lesson Immersion without translation can be slow for grammar-heavy learners	Full course access requires payment Proprietary service that needs an account
Downloadable app, Web application	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.