Now available on the Chrome Web Store

Learn Français
while you browse

Lua highlights words as you read — like saudade in a Portuguese essay, or ikigai in a piece about Japanese philosophy. Hover any word to translate it in context. Keep browsing, keep learning.

Add to Chrome — Free See how it works ↓

No account required · Works instantly · Free forever

How it works

Three steps to fluency

No separate study sessions. Lua fits into the browsing you already do.

Install & Choose a Language

Add Lua to Chrome in under a minute. Pick from 50+ languages — French, Spanish, Japanese, Mandarin, and more. No signup, no configuration. Just install and go.

Browse Like Normal

Lua highlights vocabulary as you read — like a curious flâneur through a foreign language. Hover any word to see its translation, definition, and pronunciation instantly — without leaving your tab.

Review & Remember

Lua tracks every word you encounter — from Weltanschauung to the simplest greeting — and schedules spaced repetition reviews at exactly the right moment. Nothing slips through.

Features

Built on learning science

Every feature is grounded in research on how humans actually acquire vocabulary.

AI Contextual Translation

Goes beyond the dictionary. Lua understands idioms, slang, and cultural nuance — giving you the meaning that fits the sentence, not just the word.

Context-aware translation

"There's a real joie de vivre here." → An exuberant enjoyment of life Not: joy of living (too literal)

Spaced Repetition Reviews

Lua tracks every word you encounter and schedules reviews at the optimal moment — right before you'd forget it. Based on the Ebbinghaus forgetting curve.

Your review queue

saudade Review now

ikigai Tomorrow

Weltanschauung In 3 days

Works on Any Website

99% site compatibility — news, Wikipedia, Reddit, YouTube subtitles, Medium, blogs. If you can read it in Chrome, Lua can teach from it.

NYT ✓

Reddit ✓

Wiki ✓

YouTube ✓

Medium ✓

+ more

Native Pronunciation

Hear every word spoken by a native voice. Learn not just what it means, but how to actually say it — with phonetic guides and audio on demand.

sprezzatura

/spret.tsaˈtu.ra/ · noun, Italian

Pricing

Simple, transparent pricing

Start free. Upgrade when you're ready to go deeper.

Free

forever

50 words per day

5 languages

AI contextual translation

Spaced repetition

Pronunciation (TTS)

Progress analytics

Loved by language learners

Join thousands who learn languages through their everyday browsing.

"The day I hovered hygge in a travel article and actually felt what the word meant — not just a translation, but the whole concept — something clicked. That's when I knew this was different."

Sarah K.

Danish learner · 3 months

"I read Japanese news every morning. Concepts like wabi-sabi that I'd heard about but never truly grasped became real through context. 400+ words in two months."

Marco R.

Japanese learner · 6 months

"Lua showed me duende — that ineffable quality of raw artistic inspiration in Spanish — right in an article about flamenco. I felt the word before I understood it. I don't think about studying anymore."

Priya M.

Spanish learner · 4 months

Learn Françaiswhile you browse

Three steps to fluency

Built on learning science

Simple, transparent pricing

Loved by language learners

Learn Français
while you browse