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.

Clozemaster is a language learning game focused on building vocabulary through mass exposure to sentences. The core mechanic involves filling in a missing word (a "cloze") in a sentence. It uses a spaced repetition system to re-test words and features a heavily gamified interface with points and leaderboards. Sourced from a large corpus of translated sentences, it's an excellent tool for intermediate learners to move beyond basic vocabulary and see words used in a wide variety of contexts, which can implicitly reinforce grammar.