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.

Busuu offers well-structured courses that balance vocabulary, grammar, and practical application. Its standout feature is the integrated community, where learners can submit writing and speaking exercises for feedback from native speakers. While the core curriculum provides a solid foundation from beginner to intermediate levels, the quality and speed of community feedback can vary. The app's speech recognition tool is functional but not its main strength, making Busuu a strong choice for those who appreciate guided learning supplemented by human interaction.