Duolingo

Duolingo is a language-learning app built around short, game-like lessons, streaks and progress paths. Its AI features sit mainly in the Max subscription tier, which adds Video Call, a spoken conversation with an animated character, and Roleplay, where you practise realistic scenarios by chatting in your target language.

It suits beginners and casual learners who want a low-pressure daily habit, and people who want some speaking practice without booking a tutor. It is less suited to advanced learners who need in-depth grammar instruction or specialised vocabulary.

The core courses are free, with ads and a limited energy allowance. Super removes ads and adds extra practice tools, and Max builds on Super with the AI conversation features; Max is offered in the mobile apps and its AI features are available only for certain language pairs. Subscription prices vary by country and are not listed on the website.