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Description

A gamified language learning app launched in 2011 with over 500 million users worldwide. Users are guided through quiz-style lessons covering vocabulary, listening, and speaking exercises across 40 languages.

Market positioning

Market leader in consumer language learning apps by user base. Duolingo dominates the mobile language learning space through aggressive gamification, a zero-cost entry point, and broad language coverage, positioning itself as the go-to app for self-directed, habit-based language acquisition.

Target audience

Casual language learners of all ages looking for a free, fun, and flexible way to learn a new language on mobile or desktop.

Use cases

Self-paced language learning for beginners to intermediate learners. Users engage in daily bite-sized lessons covering vocabulary, grammar, listening, and speaking across 40+ languages. Ideal for hobby learners, travelers, students, and anyone seeking low-commitment language exposure.

Company information

Company size

~700 employees

Revenue

~$531 million (FY 2023)

Scale

Global — 500+ million registered users across 40+ languages

Number of users

500+ million registered users globally

Features

40+ languages including German and constructed languages (conlangs); Mobile and desktop availability; Gamified quiz-style lessons (matching pairs, drag-and-drop, sentence translation); Heavy gamification with streaks, leaderboards, and rewards; AI-driven adaptive learning and personalized lesson pathways; Generative AI-powered personalized review loops; AI-powered chatbots for conversational practice; Speech recognition and pronunciation feedback; Listening and speaking exercises; Duolingo Stories for simulated real-life conversations; Thematic modules (travel, greetings, food, family); Placement test for beginners and advanced learners; Personalized weak-word identification; Daily progress tracking, goal setting, and reminders; Peer competitions and social features; Year-in-review and shareable milestones; Free tier with full course access; Freemium model with optional Duolingo Plus/Super subscription; Mobile-first app experience; Self-paced learning; Vocabulary and grammar exercises

Pricing

Pricing modelFreemium — full course access available for free; premium tier (Duolingo Plus / Super Duolingo) removes ads, enables offline access, and unlocks additional features
Starting price$0 (Free tier); Duolingo Super starts at ~$6.99/month (billed annually)
Billing periodMonthly and Annual (for Duolingo Plus/Super subscription)

Rating

4.7/5

No Trustpilot link available

Pros and cons

Based on: (AI summary)

Pros

  • Gamified approach increases engagement
  • Free to use with no required in-app purchases
  • Extremely large user base (500M+ users)
  • Simple and intuitive UI — easy to pick up
  • Daily progress tracking and motivation features

Cons

  • Some vocabulary taught is unusual and not practical for real-life use
  • Does not teach natural thinking in the target language
  • Limited depth for advanced learners
  • Translation-based approach — does not immerse users in the target language
  • Speaking lessons on mobile focus on repetition rather than independent conversation

Feature Comparison

Top features across 20 competitors (most common first)

Feature DuolingoBabbelRosetta Sto…PimsleurSpokenSpeakGoMigoHelloTalkBusuuGoethe-Inst…chatgptDW Learn Ge…Coursera La…LanguaHumboldt-In…MondlyPreplyGiglishTalkpalOpen English
AI conversational chatbot
Language tutoring
drag-and-drop
leaderboards
greetings
food
goal setting
Short lessons (10–15 min) fit into busy schedules
Business language learning option
Established brand with global reach
Available on mobile and web
Practical real-world language usage
Structured, conversation-focused curriculum
Strong market position with ~19% revenue share
Structured, grammar-focused curriculum
Available on any device
Supports intermediate and advanced levels
Structured curriculum designed by language experts
Practical conversation focus
Strong German language offering