Bamboo Island: Learn Chinese

Bamboo Island is a free, ad-free, fully offline Mandarin Chinese learning app for learners of every age — from young beginners learning with a family member to teens, college students, and adult self-learners.

No subscription. No paywall. No account. No ads. Everything works offline.

FOUR WAYS TO LEARN

📖 Stories — Turn daily life into Chinese reading. Write or speak a story in English, tap ✨ to translate it into Chinese, and read it with pinyin, audio, and tap-to-look-up words on every line.

💬 Talks — Build conversations between two or more speakers, each with their own voice. Listen, then speak back. Practice solo with a virtual partner or with friends.

🎴 Flashcards — Review on a spaced-repetition schedule that adapts to what you forget. Grade each card Again, Hard, Good, or Easy, and the schedule adjusts itself. Characters, words, and radicals from your stories and conversations become cards automatically — no manual entry, nothing to add by hand.

🧩 Remember — The Bamboo Island System: a memory-palace method that turns each character into a vivid picture. Radicals become shapes, initials become people, finals become places, and tones become family-member voices.

KEY FEATURES

• Tone-sandhi pinyin — see how tones actually change in connected speech, with dictionary form (green) and spoken form (blue) shown side by side, and changed syllables highlighted in red.

• Works fully offline — no Wi-Fi or cellular data needed after install. Learn anywhere: on a bus, in a waiting room, in your free time.

• Private by design — everything you create stays on your device. No account, no login, no cloud sync. We can't see what you write.

• Optional AI — translate English to Chinese or generate stories with your own API key (Groq, Gemini, OpenRouter, OpenAI — several offer free tiers). Without AI, everything works by hand.

• Bilingual — Chinese and English text throughout. The AI also gently fixes your English grammar before translating, so you learn correct English too.

• Stroke order — practice writing characters with your finger, with animated stroke-order guides.

• HSK levels — color-code words by HSK level and browse the full HSK 3.0 vocabulary list. Words you've already used show a ★ count — tap it to jump to the Stories and Talks where they appear.

• Built-in Guide — plain-English chapters comparing Chinese and English grammar, sounds and tones with audio you can play on the page, and copy-paste chatbot prompts for creating stories without an AI key.

• Learning Report — see which characters, words, and radicals you know well and which need more practice, plus your weekly progress, then tap to drill just the tricky ones.

• Voice recording — record yourself reading a line, then play it back beside the app's audio to hear your progress.

• Radical reviews — a separate practice track just for character components, with writing drills in the color you pick.

• Backup & restore — export everything you've made (stories, talks, cards, recordings, images) into one file you can keep or move to a new phone.

• Works with Pleco — tap any word to open it straight in the Pleco Chinese dictionary app if you have it installed.

WHO IT'S FOR

Whether you're a parent learning with your family, a high-school student, a college student, an officemate studying at lunch, or a solo learner with a phone and a goal — Bamboo Island adapts to you. The content you create is what you make it.

FREE, FOR REAL

There is no catch. No ads, no premium tier, no data sold. We built this to share with the Chinese-learning community — especially learners who can't afford monthly subscriptions or big upfront payments. If it helps you, that's the whole point.

https://bambooisland.app