# Lingoku.AI - Full Site Index

> Lingoku is an AI-powered browser extension that turns videos and websites (YouTube, Netflix, Bilibili, Reddit, Hacker News, BBC, etc.) into a language-immersion tutor. It adaptively replaces portions of content with your target language, matches material to your level (i+1), offers instant explanations and spaced-repetition review, and supports Chinese, Japanese, and Korean. No login or credit card required; bring your own API key.

Lingoku focuses on "acquisition" (contextual exposure) rather than rote memorization. Key features include intelligent difficulty matching (i+1), instant feedback and explanations, contextual sentence-level learning, and spaced repetition based on forgetting-curve principles.

## Install / Extensions

- [Chrome extension](https://chrome.google.com/webstore/detail/pmiebjobnadehkmjgkbkapkcbkmjefkg): Free to install, no login required
- [Edge add-on](https://microsoftedge.microsoft.com/addons/detail/daakemebbojkiphanehgofkofpdkofai): Edge browser support
- [Firefox add-on](https://addons.mozilla.org/zh-CN/firefox/addon/lingoku-ai/): Firefox support

## Main Pages

- [Home](https://lingoku.ai)
- [About](https://lingoku.ai/about)
- [Pricing](https://lingoku.ai/pricing)
- [Changelog](https://lingoku.ai/changelog)
- [Privacy](https://lingoku.ai/privacy)
- [Terms](https://lingoku.ai/terms)
- [Affiliate](https://lingoku.ai/affiliate)
- [Blog](https://lingoku.ai/blog)
- [Home](https://lingoku.ai/zh-CN)
- [About](https://lingoku.ai/zh-CN/about)
- [Pricing](https://lingoku.ai/zh-CN/pricing)
- [Changelog](https://lingoku.ai/zh-CN/changelog)
- [Privacy](https://lingoku.ai/zh-CN/privacy)
- [Terms](https://lingoku.ai/zh-CN/terms)
- [Affiliate](https://lingoku.ai/zh-CN/affiliate)
- [Blog](https://lingoku.ai/zh-CN/blog)
- [Home](https://lingoku.ai/ja)
- [About](https://lingoku.ai/ja/about)
- [Pricing](https://lingoku.ai/ja/pricing)
- [Changelog](https://lingoku.ai/ja/changelog)
- [Privacy](https://lingoku.ai/ja/privacy)
- [Terms](https://lingoku.ai/ja/terms)
- [Affiliate](https://lingoku.ai/ja/affiliate)
- [Blog](https://lingoku.ai/ja/blog)
- [Home](https://lingoku.ai/ko)
- [About](https://lingoku.ai/ko/about)
- [Pricing](https://lingoku.ai/ko/pricing)
- [Changelog](https://lingoku.ai/ko/changelog)
- [Privacy](https://lingoku.ai/ko/privacy)
- [Terms](https://lingoku.ai/ko/terms)
- [Affiliate](https://lingoku.ai/ko/affiliate)
- [Blog](https://lingoku.ai/ko/blog)

## Learn Languages / Getting Started

- [Home / Learn Languages](https://lingoku.ai/)
- [Learn Chinese](https://lingoku.ai/learn-chinese)
- [Learn Japanese](https://lingoku.ai/learn-japanese)
- [Learn Korean](https://lingoku.ai/learn-korean)
- [Home / Learn Languages](https://lingoku.ai/zh-CN/)
- [Learn English](https://lingoku.ai/zh-CN/learn-english)
- [Learn Japanese](https://lingoku.ai/zh-CN/learn-japanese)
- [Learn Korean](https://lingoku.ai/zh-CN/learn-korean)
- [Home / Learn Languages](https://lingoku.ai/ja/)
- [Learn English](https://lingoku.ai/ja/learn-english)
- [Learn Chinese](https://lingoku.ai/ja/learn-chinese)
- [Learn Korean](https://lingoku.ai/ja/learn-korean)
- [Home / Learn Languages](https://lingoku.ai/ko/)
- [Learn English](https://lingoku.ai/ko/learn-english)
- [Learn Chinese](https://lingoku.ai/ko/learn-chinese)
- [Learn Japanese](https://lingoku.ai/ko/learn-japanese)

## Tools

- [How long to learn chinese calculator](https://lingoku.ai/tools/how-long-to-learn-chinese)
- [How long to learn japanese calculator](https://lingoku.ai/tools/how-long-to-learn-japanese)
- [How long to learn korean calculator](https://lingoku.ai/tools/how-long-to-learn-korean)
- [How long to learn english calculator](https://lingoku.ai/zh-CN/tools/how-long-to-learn-english)
- [How long to learn japanese calculator](https://lingoku.ai/zh-CN/tools/how-long-to-learn-japanese)
- [How long to learn korean calculator](https://lingoku.ai/zh-CN/tools/how-long-to-learn-korean)
- [How long to learn english calculator](https://lingoku.ai/ja/tools/how-long-to-learn-english)
- [How long to learn chinese calculator](https://lingoku.ai/ja/tools/how-long-to-learn-chinese)
- [How long to learn korean calculator](https://lingoku.ai/ja/tools/how-long-to-learn-korean)
- [How long to learn english calculator](https://lingoku.ai/ko/tools/how-long-to-learn-english)
- [How long to learn chinese calculator](https://lingoku.ai/ko/tools/how-long-to-learn-chinese)
- [How long to learn japanese calculator](https://lingoku.ai/ko/tools/how-long-to-learn-japanese)

## Blog & Resources

- [Blog - View All Articles](https://lingoku.ai/blog): Tips, theories, and resources for language acquisition

- [Duolingo Stock Crashed 80%: Is AI Really Killing Language Learning?](https://lingoku.ai/blog/duolingo-stock-crash-ai-language-learning): Duolingo's stock plummeted 80% in 2026, with investors blaming AI disruption. But the real story is more complex—and it reveals what the future of language learning actually looks like.
- [Why Your Chinese Birthday Message Might Be Insulting (Without You Knowing)](https://lingoku.ai/blog/happy-birthday-in-chinese): I sent 'sheng ri kuai le' to my Chinese boss and learned a hard lesson about birthday hierarchy. Here's what nobody tells you about Chinese birthday culture.
- [The Awkward Truth About Saying Hello in Chinese (And How to Avoid It)](https://lingoku.ai/blog/hello-in-chinese): I spent 3 years sounding like a robot in China. Here's what nobody taught me about Chinese greetings—and the mistakes that mark you as a foreigner immediately.
- [How to Say Hi in Chinese: What Happened When I Got It Wrong](https://lingoku.ai/blog/how-to-say-hi-in-chinese): I arrived in Beijing thinking 'ni hao' was all I needed. One awkward taxi ride later, I realized Chinese greetings work differently. Here's what I learned.
- [Why I Couldn't Count in Korean for 6 Months (And the Numbering System Nobody Explained)](https://lingoku.ai/blog/numbering-in-korean): I memorized 1-10 in Korean. Then I got to a restaurant and couldn't read the menu. Here's why Korean has two number systems—and when to use each.
- [How to Write Hello in Chinese: 你好 vs 您好 Explained](https://lingoku.ai/blog/how-to-write-hello-in-chinese): Learn exactly how to write hello in Chinese. Master both 你好 (nǐ hǎo) and 您好 (nín hǎo), plus when to use each one.
- [Mandarin of Hello: What It Actually Means & How to Use It](https://lingoku.ai/blog/mandarin-of-hello): Searching for 'mandarin of hello'? Learn what this phrase means, how to say hello in Mandarin Chinese, and why it's different from other dialects.
- [How to Say Yes in Japanese: 7 Ways to Agree Like a Native](https://lingoku.ai/blog/yes-japanese-language): Stop saying 'hai' for everything. Learn the real ways Japanese people say yes—from casual 'un' to polite 'ee'—and when to use each one.
- [5 Free AI Language Learning Tools That Actually Work (2026)](https://lingoku.ai/blog/free-ai-language-learning-tools): Tired of paying $30/month for language apps? These 5 free AI tools can teach you Spanish, Japanese, or any language—without spending a dime.
- [2026年真正有效的5款免费AI语言学习工具](https://lingoku.ai/zh-CN/blog/free-ai-language-learning-tools): 厌倦了每月花200元订阅语言App？这5款免费AI工具可以教你西班牙语、日语或任何语言——不需要花一分钱。
- [2026年、本当に使える無料AI言語学習ツール5選](https://lingoku.ai/ja/blog/free-ai-language-learning-tools): 月30ドルの語学アプリにうんざりしていませんか？スペイン語、日本語、どの言語でも学べる無料AIツール5選をご紹介します——お金をかけずに。
- [2026년 진짜 효과 있는 묣료 AI 언어 학습 도구 5가지](https://lingoku.ai/ko/blog/free-ai-language-learning-tools): 매월 3만원씩 드는 어학 앱에 지치셨나요? 스페인어, 일본어, 어떤 언어든 배울 수 있는 묣료 AI 도구 5가지를 소개합니다——돈 한 푼 안 들이고.
- [How to Say 'I Love You' in Korean: A Natural Guide](https://lingoku.ai/blog/korean-in-i-love-you): Ready to express your feelings? Learn the real ways Koreans say 'I love you'—from romantic phrases and social etiquette to the cultural meaning of actions over words.
- [Get Ready to Learn Chinese: A Complete Beginner's Preparation Guide](https://lingoku.ai/blog/get-ready-to-learn-chinese): Thinking about learning Chinese? Here's everything you need to know before you start—from mastering tones to choosing the right tools. Get ready to learn Chinese with confidence.
- [How to Say Good Morning in Chinese: From Casual to Formal](https://lingoku.ai/blog/how-to-say-good-morning-in-chinese): Learn exactly how to say good morning in Chinese, from the standard 早上好 (zǎo shang hǎo) to casual text-style greetings. Master pronunciation, cultural timing, and when NOT to use nǐ hǎo.
- [住所を英語に変換する完全ガイド｜ローマ字表記のルールと便利ツール](https://lingoku.ai/ja/blog/japanese-address-english-guide): 海外のオンラインショップで買い物をするとき、履歴書で海外の連絡先を書くとき、「自分の住所、英語でどう書けばいいんだろう？」と困ったことはありませんか？日本語の住所を英語（ローマ字）に変換する方法と、便利なオンラインツールを紹介します。
- [Japanese Etiquette for Beginners: Your Complete 2026 Guide](https://lingoku.ai/blog/japanese-etiquette-for-beginners): Master Japanese etiquette effortlessly! Learn essential manners for greetings, dining, bowing, shoes, and onsen. Perfect guide for tourists and beginners visiting Japan.
- [Stop Rote Memorization: How to Use AI to Learn a Language Faster in 2026](https://lingoku.ai/blog/how-to-use-ai-to-learn-a-langugage-faster): Discover how to master a new language without boring memorization. Learn 4 proven strategies using AI tools like lingoku.ai and Gemini to accelerate your learning through immersive browsing, AI-powered reading, and real-time speaking practice.
- [拒绝死记硬背：2026 年如何用 AI 更快地学会一门语言](https://lingoku.ai/zh-CN/blog/how-to-use-ai-to-learn-a-langugage-faster): 发现无需枯燥背诵就能掌握新语言的秘诀。学习 4 种经过验证的 AI 策略，利用 lingoku.ai 和 Gemini 等工具，通过沉浸式浏览、AI 辅助阅读和实时口语练习来加速你的学习进程。
- [丸暗記はもう古い：2026年、AIを使って最速で言語を習得する方法](https://lingoku.ai/ja/blog/how-to-use-ai-to-learn-a-langugage-faster): 退屈な暗記なしで新しい言語をマスターする方法を発見しましょう。lingoku.aiやGeminiなどのAIツールを活用し、没入型のブラウジング、AIによる読解サポート、リアルタイムの会話練習を通じて学習を加速させる4つの実証済み戦略をご紹介します。
- [주입식 암기는 그만: 2026년, AI로 외국어를 더 빨리 배우는 방법](https://lingoku.ai/ko/blog/how-to-use-ai-to-learn-a-langugage-faster): 지루한 암기 없이 새로운 언어를 마스터하는 비결을 발견하세요. lingoku.ai 및 Gemini와 같은 AI 도구를 사용하여 몰입형 브라우징, AI 기반 독해, 실시간 회화 연습을 통해 학습 속도를 높이는 4가지 검증된 전략을 알아보세요.
- [2026 Deep Review: Top 5 Best AI Language Learning Tools in the World](https://lingoku.ai/blog/top-5-best-ai-language-learning-tools-in-the-world): Looking for the best AI tools to practice speaking in 2026? This deep dive reviews ChatGPT, Gemini, Lingoku.AI, Talkpal, and Duolingo Max. Learn how to master a new language using AI browser extensions and intelligent language tutors.
- [2026 深度评测：全球 Top 5 最佳 AI 语言学习工具](https://lingoku.ai/zh-CN/blog/top-5-best-ai-language-learning-tools-in-the-world): 正在寻找 2026 年练习口语的最佳 AI 工具？本文深度评测了 ChatGPT、Gemini、Lingoku.AI、Talkpal 和 Duolingo Max。了解如何利用 AI 浏览器扩展和智能语言私教掌握一门新语言。
- [2026年徹底レビュー：世界最高のAI語学学習ツール Top 5](https://lingoku.ai/ja/blog/top-5-best-ai-language-learning-tools-in-the-world): 2026年、スピーキング練習に最適なAIツールをお探しですか？ChatGPT、Gemini、Lingoku.AI、Talkpal、Duolingo Maxを徹底レビュー。AIブラウザ拡張機能やインテリジェントな言語チューターを使って、新しい言語をマスターする方法を学びましょう。
- [2026 심층 리뷰: 세계 최고의 AI 언어 학습 도구 Top 5](https://lingoku.ai/ko/blog/top-5-best-ai-language-learning-tools-in-the-world): 2026년 스피킹 연습을 위한 최고의 AI 도구를 찾고 계신가요? ChatGPT, Gemini, Lingoku.AI, Talkpal, Duolingo Max를 심층 분석했습니다. AI 브라우저 확장 프로그램과 지능형 언어 튜터를 사용하여 새로운 언어를 마스터하는 방법을 알아보세요.
- [The 2026 Definitive Guide to the Best Online English Learning Tools](https://lingoku.ai/blog/definitive-guide-to-the-best-online-english-tools): Looking for the best online English learning tools? This deep dive explores the top 2026 AI solutions: from Gemini Live's real-time practice to Lingoku.ai's immersive web acquisition. Master fluency and expand your vocabulary for work, exams, and daily life.
- [2026 年最佳在线英语学习工具权威指南](https://lingoku.ai/zh-CN/blog/definitive-guide-to-the-best-online-english-tools): 正在寻找最佳的在线英语学习工具？本文为您深度解析 2026 年顶尖的 AI 解决方案：从 Gemini Live 的实时口语陪练到 Lingoku.ai 的沉浸式网页习得。助您在工作、考试和日常生活中掌握流利英语并扩充词汇量。
- [2026年版：最高のオンライン英語学習ツール完全ガイド](https://lingoku.ai/ja/blog/definitive-guide-to-the-best-online-english-tools): 最適なオンライン英語学習ツールをお探しですか？Gemini Liveによるリアルタイム会話練習から、Lingoku.aiによる没入型ウェブ習得まで、2026年の最新AIソリューションを徹底解説します。仕事、試験、そして日常生活のための流暢さと語彙力を手に入れましょう。
- [2026년 최고의 온라인 영어 학습 도구 완벽 가이드](https://lingoku.ai/ko/blog/definitive-guide-to-the-best-online-english-tools): 최고의 온라인 영어 학습 도구를 찾고 계신가요? Gemini Live의 실시간 회화 연습부터 Lingoku.ai의 몰입형 웹 습득까지, 2026년 최신 AI 솔루션을 심층 분석합니다. 업무, 시험, 일상생활을 위한 유창성과 어휘력을 마스터하세요.
- [How to Learn Japanese Easily: 5 Strategies and Tools to Conquer Language Anxiety](https://lingoku.ai/blog/how-to-learn-japanese-easily): Unlock easy online Japanese learning! Discover 5 proven strategies and top tools like Duolingo and lingoku.ai to master Gojūon, boost vocabulary, and speak fluently
- [轻松学日语：战胜语言焦虑的 5 种策略与工具](https://lingoku.ai/zh-CN/blog/how-to-learn-japanese-easily): 开启轻松的在线日语学习之旅！探索 5 种行之有效的策略，利用多邻国 (Duolingo) 和 lingoku.ai 等顶级工具，助你攻克五十音图、扩充词汇量并以此流利开口。
- [일본어, 쉽게 배우는 법: 언어 불안을 극복하는 5가지 전략과 도구](https://lingoku.ai/ko/blog/how-to-learn-japanese-easily): 쉽고 편한 온라인 일본어 학습의 문을 열어보세요! 5가지 검증된 전략과 듀오링고, lingoku.ai와 같은 최고의 도구를 통해 50음도를 마스터하고, 어휘력을 높이며, 유창하게 말해보세요.
- [Welcome to Lingoku: Your Journey to Language Mastery Begins Here](https://lingoku.ai/blog/welcome-to-lingoku): Join us as we share language learning tips, cultural insights, and product updates to help you on your multilingual journey.
- [欢迎来到灵语岛：您的语言精通之旅从此开始](https://lingoku.ai/zh-CN/blog/welcome-to-lingoku): 与我们一起分享语言学习技巧、文化见解和产品更新，帮助您实现多语言梦想。
- [リンゴクへようこそ：あなたの言語マスタージャーニーがここから始まります](https://lingoku.ai/ja/blog/welcome-to-lingoku): 言語学習のコツ、文化的洞察、そして製品アップデートを共有し、あなたの多言語の夢をサポートします。
- [링고쿠에 오신 것을 환영합니다: 여러분의 언어 마스터리 여정이 여기서 시작됩니다](https://lingoku.ai/ko/blog/welcome-to-lingoku): 언어 학습 팁, 문화적 통찰력, 제품 업데이트를 공유하여 여러분의 다언어 꿈을 지원합니다.

## Legal & Policies

- [Privacy Policy](https://lingoku.ai/privacy): Privacy details
- [Terms of Service](https://lingoku.ai/terms): Terms and conditions

## Contact & Community

- [support@lingoku.ai](mailto:support@lingoku.ai): Support email
- [Discord](https://discord.gg/khRPkVTPNW): Community and support
- [X (Twitter)](https://x.com/LingokuAI): Social updates

---
Generated by Lingoku.AI
Last updated: 2026-03-03T16:04:16.823Z