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LingoDeer vs Rosetta Stone: catalog facts
LingoDeer	Rosetta Stone
Freemium Full access to all languages and features is a paid purchase, with multi-year plans…	Paid Paid membership, with a free lesson to try first.
Android, iOS	Android, iOS, Web
Grammar-based curriculum written by language teachers Native speaker audio instead of text-to-speech	Immersive lessons without relying on translation Speech recognition feedback on pronunciation
Full access requires payment Mobile apps only in the listed downloads	Requires a paid membership beyond the free trial lesson Immersion without translation can be slow for grammar-heavy learners
Downloadable app	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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