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Duolingo vs Mondly: catalog facts
Duolingo	Mondly
Freemium Free courses, with paid subscriptions including Duolingo Max and a one-week free trial.	Freemium Free to start learning; fuller access is sold separately.
Android, iOS, Web	Android, iOS, Web
Short lessons that fit into a few minutes a day Habit-building features such as streaks and reminders	41 languages, learnable from many native languages Daily lessons and topic-based conversations
AI features of Max require a paid subscription Game-like format is lighter than a structured course	Short lessons suit beginners more than advanced learners Pricing for full access is not shown on the homepage
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 October 1, 2026

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