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Clozemaster vs Duolingo: catalog facts
Clozemaster	Duolingo
Freemium Free to play, with a paid Pro tier that adds advanced features.	Freemium Free courses, with paid subscriptions including Duolingo Max and a one-week free trial.
Android, Web	Android, iOS, Web
Vocabulary learned inside real sentences Over 170 language pairings	Short lessons that fit into a few minutes a day Habit-building features such as streaks and reminders
Advanced features require Pro Less suited to complete beginners with no grammar basics	AI features of Max require a paid subscription Game-like format is lighter than a structured course
Downloadable app, Web application	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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