Duolingo is arguably the most recognized language learning app, known for its game-like interface that makes starting a new language feel fun and accessible. Through points, streaks, and leaderboards, it excels at motivating users to build a consistent daily practice habit. The bite-sized lessons are ideal for learning vocabulary and basic sentence structures on the go. However, the platform offers weak explicit grammar explanations and limited opportunities for real speaking practice, meaning its content can feel shallow for those aiming to move beyond a beginner level. It serves best as an engaging starting point or a vocabulary-building supplement.

Speak is an AI-powered language app designed to tackle the biggest hurdle for many learners: speaking practice. It uses advanced speech recognition to engage you in realistic conversations on a wide variety of topics. The app provides instant feedback on pronunciation and fluency, helping you build confidence without the pressure of talking to a real person. While it is one of the best tools available for improving spoken output, it is not a comprehensive curriculum and lacks deep grammar explanations.