Read Real Books. Learn Naturally.

Stop Memorizing. Start Reading.

Finish your first real book in your target language. Built-in instant dictionary, AI sentence breakdown, and seamless multi-device sync.

What can you achieve with LibGrow?
Finish your first foreign novel
Learn vocabulary naturally in context
Read fluently without app switching
Read anywhere across all your devices
Download for macOSFor M-series Macs
Other download options
LibGrow Reader on Tablet
Pad
LibGrow Reader on macOS Desktop
PC
LibGrow Reader on Mobile Phone
Phone
Real EPUB Reader Experience

Experience Reading with LibGrow

See how instant dictionary lookup, Furigana annotations, and AI sentence breakdown transform your foreign reading.

夏目漱石 『吾輩は猫である』
Chapter I · Interactive Selection ReaderTap any word to inspect

吾輩は

ねこ (neko)Reading Hint
猫である。名前はまだ無い。

どこで生れたかとんと見当がつかぬ。何でも薄暗いじめじめした所でニャーニャー泣いていた事だけは記憶している。

吾輩はここで始めて人間というものを見た。しかもあとで聞くと、それは書生という人間中で一番獰悪な種族であったそうだ。

100% Offline Dict (JMdict + WordNet)LibGrow EPUB Engine

猫

[ねこ / neko]
Noun · Common · JLPT N5

1. cat; feline (Felis catus)

2. geisha; shamisen player (slang)

Source: JMdict (Offline DB) Instant Lookup
Features

Designed for Outcomes, Not Just Features

Stop struggling with fragmented study apps. LibGrow turns every chapter into natural progress.

0 App Switching

Read Without Interruptions

Read naturally without constantly switching to dictionaries or translator apps.

  • Instant tap-to-lookup offline dictionaries (JMdict, CEDICT, WordNet)
  • Smart lemmatization & verb inflection matching
  • Toggle Furigana & pitch accent markers on demand
Natural Acquisition

Learn While Reading

Every page becomes a language lesson tailored to what you actually read.

  • Save words and expressions directly in reading context
  • AI sentence structure breakdown for complex grammar
  • Build a personal knowledge base that grows with your library
Total Freedom

Read Anywhere

Continue reading wherever you are, on any screen.

  • Seamless cloud sync across macOS, Windows, Linux, iOS & Android
  • Import your own EPUB & PDF files without restrictions
  • Includes 90,000+ free classics (Aozora Bunko & Project Gutenberg)
Reading Progression

How You Read & Grow with LibGrow

A natural progression path designed to help you go from struggling on page one to enjoying authentic books.

Phase 1: Starting Your First Book

Read Without Friction from Day One

  • ✓Import your favorite EPUB/PDF or pick from 90,000+ free built-in classics
  • ✓Tap any word for instant offline dictionary lookup (JMdict, CEDICT, WordNet)
  • ✓Toggle Furigana and pitch accent markers whenever you need a hint
LibGrow Reader Flow
Phase 2: Building Momentum

Untangle Complex Pages Effortlessly

  • ✓Ask the AI assistant to break down difficult grammar and sentence structures
  • ✓Save vocabulary in reading context for effortless review
  • ✓Sync your reading progress seamlessly between desktop and mobile
LibGrow Reader Flow
Phase 3: Achieving Reading Flow

Finish Books You Never Thought You Could Read

  • ✓Rely less on translations as your vocabulary grows in real context
  • ✓Build a personal knowledge base connected to your notes and highlights
  • ✓Turn reading foreign literature into a genuinely enjoyable daily habit
LibGrow Reader Flow
Use Cases

Built For Your Reading Goals

Tailored experiences whether you are tackling Japanese novels, English classics, or daily articles.

For Japanese Learners

Read Manga, Novels & Short Stories

Master Japanese through real literature with instant Furigana toggle, verb conjugation analysis, and JMdict offline lookup.

No more getting stuck on kanji or complex sentence endings.
For English Learners

Read Classics, News & Modern Books

Expand your vocabulary and grasp subtle nuances using WordNet definitions and AI-powered context explanations.

Understand idioms and metaphors as native speakers do.
For Daily Readers

Turn Reading Habits into Language Learning

Make language learning an effortless byproduct of your daily reading schedule without flashcard fatigue.

Consistency happens naturally when reading is fun.
For Book Lovers

Import Any EPUB or PDF & Read Immediately

Bring your own e-books or explore thousands of free public domain masterpieces directly in the built-in library.

Your personal library, formatted beautifully on every screen.
Who is it for

Built for Two Kinds of Readers

For Language Learners

Especially built for English, Japanese, and Chinese learners — deep offline dictionaries, smart lemmatization, furigana, and CEDICT/JMdict-powered lookup.

EnglishReady now
日本語Ready now
中文Ready now
한국어coming soon
Españolcoming soon
Françaiscoming soon
Deutschcoming soon
Portuguêscoming soon
  • Offline dictionaries — no internet needed
  • Smart lemmatization & furigana
  • EPUB & PDF with full annotation

For Serious Readers

Even in your native language, LibGrow turns reading into thinking: your highlights and notes grow into a personal knowledge base.

LibGrow knowledge graph and PKM view
  • Personal knowledge base built from your notes
  • AI reading companion on every page
  • 90,000+ free classics built in