Kotoba: Learn by Reading

Learn a language by reading stories, articles, and books you actually care about.

Kotoba helps you build vocabulary in context, not through boring drills. Read stories, articles, or any text in your target language. Tap any word you don't know to see instant translations, then save it to your personal vocabulary. Kotoba turns every text into a personal language lesson.

LEARN IN CONTEXT
Unlike traditional apps that make you memorize word lists, Kotoba shows you how words are actually used. Every word you save comes with the sentence where you found it, helping you remember meaning and usage naturally.

AI CONVERSATION PRACTICE
Chat with an AI tutor that adapts to your level. Practice writing in your target language and get instant feedback on grammar and word choice. The tutor gently corrects your mistakes and keeps the conversation flowing naturally.

SMART FLASHCARDS
Review your vocabulary with spaced repetition — a scientifically-proven method that optimizes your memory. Cards appear right when you're about to forget them, making your study time more efficient.

NATIVE-QUALITY AUDIO
Listen to any text with natural text-to-speech. Train your ear to recognize words and improve your pronunciation by hearing how native speakers sound.

MULTIPLE LANGUAGES
Start learning Japanese, Spanish, French, German, Korean, Chinese, Italian, Portuguese, and more. Switch between languages anytime.

FEATURES
• Tap-to-translate reading experience
• AI conversation practice with grammar correction
• Spaced repetition flashcards
• Text-to-speech for any content
• Personal vocabulary tracker
• Curated stories for learners
• Progress tracking and statistics
• Clean, distraction-free design

Kotoba Pro unlocks:
• Unlimited translations
• Unlimited stories
• Unlimited AI chat
• Text-to-speech for all content
• No daily limits

Start your language learning journey today.

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