Bulb: Lexicon & Language App

Learn languages by reading real books and browsing websites. Tap any word for instant translation, build vocabulary from what you read, and improve your writing with AI feedback.

Bulb is for people who want to learn through authentic content instead of gamified drills. Import EPUB books, browse foreign-language websites with built-in translation, and use AI feedback to improve your writing.

=== HOW IT WORKS ===

READ REAL BOOKS
Import EPUB books in your target language. Tap any word for instant translation and pronunciation. Save words to your vocabulary as you read. Double-tap sentences for full context. Create bookmarks and highlights.

BROWSE AND TRANSLATE WEBSITES
Read news, articles, and blogs in your target language with built-in translation. Tap unfamiliar words for definitions. Save vocabulary while browsing. Practice with real-world content that interests you.

BUILD VOCABULARY IN CONTEXT
Every word you look up is saved with its original sentence. Review with spaced repetition flashcards generated from your reading. Practice translating sentences back and forth. Learn words as they are actually used.

GET AI WRITING FEEDBACK
Write essays, emails, or journal entries and receive detailed analysis of grammar, style, and vocabulary. See specific error patterns with visual charts. Get suggestions tailored to your level. Track your improvement over time.

=== WHO IT IS FOR ===

- Professionals improving business English or foreign-language writing for work
- Students preparing for language exams with real reading and writing practice
- Book lovers who want to read novels and nonfiction in other languages
- Learners who prefer authentic content over artificial lessons and gamified drills

=== SUPPORTED LANGUAGES ===

English, Spanish, French, German, Chinese, Japanese, Italian, Portuguese, Russian, Korean, Arabic, Serbian

=== KEY FEATURES ===

- EPUB reader with tap-to-translate
- Built-in web browser with instant translation
- Automatic vocabulary capture with context
- Spaced repetition flashcards
- AI essay analysis with grammar, style, and vocabulary feedback
- Writing progress tracking with visual charts
- iCloud sync across all your iOS devices

Built for focused reading, vocabulary, and writing practice without gamified drills.

Requires internet connection for AI features and translation.

Privacy Policy: https://thebulb.app/privacy
Terms of Service: https://thebulb.app/terms