知音 (Zhīyīn) means "a person who truly understands you" — and that's exactly what this app is designed to be for Mandarin learners. Whether you've always been curious about China, planning a trip, or simply love languages, 知音 gives you the most solid foundation possible for learning Mandarin Chinese — just like Chinese children learn it in school. WHAT YOU'LL LEARN Stage 1 — Initials & Finals (声母韵母) Master the building blocks of all Mandarin sounds. Each sound comes with an English approximation, IPA notation, articulation guide, and an animated mouth diagram showing exactly how to position your lips and tongue. Stage 2 — Tones & Pinyin (声调) Mandarin has 4 tones — the same syllable means completely different things depending on your pitch. We explain each tone with animated pitch contour visualizations and memory tricks that actually stick. Stage 3 — Chinese Characters (汉字) Study and quiz yourself on the 1,000 most frequently used Chinese characters, each with Pinyin, tone, English meaning, and example words. WHY 知音 - Built for English speakers — all explanations are in English - Animated mouth diagrams — see exactly how each sound is made - Pitch contour animations — visualize tones the way linguists do - Progress tracking — track your mastered sounds and characters - Clean, distraction-free design — focus on learning, nothing else - No ads, no gimmicks Start with "māo" (猫, cat) and work your way to fluency. 加油！
