Duolingo
Learn any language for free with gamified lessons
Our Verdict
Duolingo is the most popular free language learning app, and its free plan teaches you a surprising amount through gamified, bite-sized lessons. You can learn over 40 languages with speaking, listening, reading, and writing exercises. The main annoyance is ads between lessons and the hearts system that limits mistakes (you get 5 hearts, and they regenerate over time). Despite these friction points, it's genuinely effective for building vocabulary and basic conversational skills at zero cost.
About Duolingo
Duolingo is the world's most popular language-learning app and it's completely free to use. With bite-sized lessons, gamification mechanics, and courses in over 40 languages, Duolingo makes language learning accessible and fun. The free version includes all course content — the paid tier just removes ads and adds streak repairs.
Pros
- +40+ languages available completely free
- +Gamification (streaks, XP, leagues) genuinely motivates consistent practice
- +Speech recognition for pronunciation practice
- +Well-designed mobile app that makes learning feel effortless
- +Stories and podcast integration for intermediate learners
- +Placement test lets experienced learners skip basics
Cons
- −Hearts system limits how many mistakes you can make per session (regenerate over time or watch ads)
- −Ads between lessons on free plan can interrupt flow
- −Not sufficient for reaching fluency on its own — best supplemented with immersion
- −Some language courses are much more developed than others
- −Grammar explanations can be thin — relies heavily on pattern learning
- −Repetitive exercises at advanced levels
Key Features
- ✓40+ languages
- ✓Gamified lessons
- ✓Speech recognition
- ✓Leaderboards
- ✓Offline mode
Use Cases
- •Language learning
- •Travel preparation
- •Skill building
- •Daily practice habits
Best For
Beginners and casual learners who want to build vocabulary and basic conversation skills through daily practice. Best as part of a broader learning strategy rather than a sole resource.
Alternatives to Duolingo
Free, open-source spaced repetition flashcard app — more powerful for vocabulary memorization but no structured lessons
More grammar-focused with community correction features and structured curriculum
Completely free audio courses that focus on understanding grammar patterns
Frequently Asked Questions
- Can you really learn a language with just Duolingo?
- You can reach A2-B1 level (basic conversational ability) in popular languages like Spanish, French, and German. But reaching fluency requires supplementation — watching TV in the target language, conversation practice, and reading. Duolingo is best as a daily habit that builds your foundation.
- Is Duolingo Super worth paying for?
- Super ($6.99/month) removes ads and the hearts limit, adds progress quizzes, and lets you practice mistakes. If you use Duolingo daily and find the hearts frustrating, it's worth it. If you practice casually a few times a week, the free plan is fine.