See a word
Spot something on a menu, street sign, product label, or manga panel you want to learn.
Built in Tokyo
Fun lessons from your world
See a word on a menu, sign, or manga page — WordDex builds a full 12-round lesson around it. Your vocabulary, from your life.
Free to start · iOS · Android planned
How it works
From a word in the wild to a lesson in your Dex
Four steps. No typing required. Every word you catch becomes something you can practice.
Scan it
Point your camera at the text. WordDex reads it and picks out the word you want to learn.
Do a 12-round lesson
Matching, fill-in-the-blank, sentence building, and speaking — a full lesson built around that word.
It joins your Dex
The word is collected into your personal vocabulary. Spaced repetition brings it back until it sticks.
What makes WordDex different
Your words, not ours
Most language apps teach from a fixed curriculum. WordDex builds lessons from the words you actually encounter — so what you learn is relevant to your life, your trip, your reading.
Lessons from your environment
Every lesson starts with a word you chose — not a generic phrase from a textbook unit you may never need.
Full lessons, not just definitions
Each word gets a complete 12-round practice session: meaning, context, sentences, and speaking.
A Dex that grows with you
Your collection is built from real encounters. Review what you caught until it becomes yours.
Exam decks when you need structure
Pre-loaded JLPT, TOEIC, and TOPIK decks complement your real-world vocabulary — same lesson format for both.
Exam decks
JLPT, TOEIC, and TOPIK — free to start
Structured decks for exam prep, with the first topics free in each line. Turn any deck word into the same interactive lesson as a scanned word.
JLPT
Free · first 3 of 6 topics per level
TOEIC
Free · first 3 of 6 themes
TOPIK
Free · first 3 of 6 topics
Beginner decks
Free · Essential 100 + alphabet packs
Languages
15+ languages supported
Learn and practice vocabulary across the languages you encounter in daily life.
Japanese
Korean
Chinese
Spanish
French
German
Arabic
Hindi
Italian
Portuguese
Russian
Thai
Vietnamese
Tagalog
Esperanto
Pricing
Free every day. Premium when you want more.
Free
Daily practice, beginner decks, and the first topics in each exam line. Enough to build a real habit without paying.
Premium
Unlimited lessons, full exam deck access, and an ad-free experience. For learners who want to go deeper.
See a word. Learn it. Collect it.
Free to start on iOS · Built by a language learner in Tokyo
Get WordDex on the App Store