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Mondly vs Duolingo: catalog facts
Mondly	Duolingo
Freemium Free to start learning; fuller access is sold separately.	Freemium Free courses, with paid subscriptions including Duolingo Max and a one-week free trial.
Android, iOS, Web	Android, iOS, Web
41 languages, learnable from many native languages Daily lessons and topic-based conversations	Short lessons that fit into a few minutes a day Habit-building features such as streaks and reminders
Short lessons suit beginners more than advanced learners Pricing for full access is not shown on the homepage	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 October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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