Duolingo

Duolingo is the world’s most popular language learning app, now deepened by AI features like Explain My Answer, Roleplay, and Video Call practice.

Overview

Duolingo gamifies language learning with short lessons, streaks, and leagues that keep learners returning daily. Its AI-powered Max subscription adds features built on advanced language models: Explain My Answer breaks down why a response was right or wrong, Roleplay lets learners practice open-ended conversations with characters, and Video Call with Lily enables realistic spoken practice. The platform adapts question difficulty to learner performance, and its courses cover 40+ languages from Spanish and Japanese to smaller languages like Navajo and Zulu. The free tier is genuinely complete for self-study, which is rare among major apps, and the streak mechanics leverage habit psychology effectively. Course quality varies by language, but major courses are extensive and regularly updated. For schools, Duolingo for Schools offers classroom management on top of the same learning engine.

Key Features

• Bite-sized gamified lessons with streaks, XP, and competitive leagues
• AI Roleplay conversations for practicing open-ended dialogue
• Explain My Answer feedback that teaches from every mistake
• Video Call speaking practice with AI characters for real conversation
• Adaptive difficulty tuning exercises to individual learner performance
• 40+ language courses including high-school and college offerings
• Free access to the full core curriculum supported by ads

Pricing

Duolingo is freemium. The free tier covers the entire learning path with ads and limited hearts, Super removes ads and adds unlimited practice, and Max adds the AI conversation and explanation features at a higher monthly price with family plan options. Family plans share one subscription across multiple learners, and annual billing reduces the monthly cost substantially.

Who Is It For

Duolingo is for casual learners and students of any level who want daily, gamified practice, with Max suited to intermediate learners who need conversation experience. Travelers and hobby learners who want steady daily practice without heavy study sessions remain the core market.

FAQ

Is Duolingo free to use?

Yes, the core curriculum is free with ads; Super and Max subscriptions remove limits and unlock AI features like Roleplay and Video Call. The core curriculum is entirely free; subscriptions mainly remove friction and add AI practice features.

Does Duolingo offer an API?

Duolingo does not offer a public API for its courses; learning happens in its apps and website. Duolingo keeps its platform closed, focusing engineering on the learning experience itself.

How does Duolingo compare to alternatives?

Duolingo leads on habit-forming gamification, while Speak and ELSA specialize in speaking practice and Busuu adds community corrections. Duolingo is the broad-coverage default; specialized apps go deeper on speaking, vocabulary, or exam preparation.