Master English through
Comprehensible Input
Read EPUB books with intelligent vocabulary filtering. Only see annotations for words beyond your level. Let context do the teaching.
The old man sat alone in his study, surrounded by towers of dusty books. He had spent a lifetime accumulating knowledge, yet felt overwhelmed by how much remained unknown.
"Wisdom," he murmured, "is not about knowing everything. It's about understanding what truly matters."
The 98% Rule
Linguist Paul Nation's research shows that 98% vocabulary coverage is the threshold for fluent reading.
LinguistReader analyzes every book's vocabulary against your CEFR level (A1-C2). Before you open a book, you'll know if it's in your optimal learning zone.
Designed for Deep Learning
Every feature is grounded in language acquisition research.
CEFR Vocabulary Filter
Set your level (A1-C2). Only words above your level get annotated. Reduces cognitive load; keeps reading flow intact.
Smart Lemmatization
"runs", "running", "ran" → run. Word book tracks lemmas, not surface forms. Your true vocabulary, measured accurately.
Bilingual Mode
Paragraph translations with sentence-level alignment. Hover on translation to highlight source. Scaffolding, not crutch.
Context-Aware AI
"Get" has 20+ meanings. Our AI explains this specific usage in this sentence. No dictionary noise.
Contextual Word Book
Save words with their original sentence + surrounding context. Jump back to source location anytime. Context-dependent memory.
Anki Export
One-click export to Anki (.apkg). Cards include source sentence and context. Spaced repetition with real reading memories.
Language Sandwich Method
Our AI prompts are engineered with a three-layer strategy:
- 1Instructions in English — precise reasoning
- 2Explanations in your native language — clear understanding
- 3Examples in target language — immersive learning
Supports OpenAI, Anthropic, Google, DeepSeek, Groq, OpenRouter, and any OpenAI-compatible API.
In this sentence, "get" means to understand.
This is an informal usage. The speaker suddenly understands something after being confused.
Local-First Philosophy
Your learning data is your digital asset. No cloud accounts. No subscriptions. No data mining.
SQLite Database
All data stored locally in an open format. Full offline access. Your files, your control.
BYOK Model
Bring your own API keys. Direct connection to AI providers. No middleman, no markup.
Total Export
Export to Anki, CSV, or full backup. Your knowledge graph goes wherever you go.
Three Zen Themes
Inspired by Japanese aesthetics. Ma (間), Kanso (簡素), Seijaku (静寂).
The clarity of white porcelain.
The depth of the Black Tortoise.
The warmth of traditional paper.
Read Deeply. Think Clearly.
Available for macOS, Windows, and Linux. Free forever.