字流HanziFlow

Master Chinese characters, one stroke at a time. 2,662 HSK characters with smart spaced repetition — study smarter, not harder.

Learn Chinese characters with spaced repetition. HanziFlow (字流) covers 2,662 characters across HSK 1–6, organized by level and theme. Study with flashcards, multiple-choice quiz, and stroke tracing. Your progress is tracked automatically — cards you know well appear less often, so you focus on what matters.