Spaced-repetition vocabulary

Words you keep.A world you build.

Master a language word by word—a calm dōjō where every word you train grows your world.

Open the web app

No download needed

Now available on iOS and Android. Your web dōjō is here too.

Real product loopMaster a word. Watch the dōjō remember your work.

Words that actually stick

Spaced repetition brings each word back before it slips—so you review less and remember more.

A ritual, not a treadmill

Three clear swipes. No streak guilt. A quiet daily practice that waits for your return.

A world that grows with you

Mastered words raise your dōjō, equip your samurai, and turn progress into a place you can see.

The daily ritual

One decision.
Three directions.

Keep the words you know, revisit the ones that need time, and retire the ones you no longer want. The schedule handles the rest.

Spanishla piedrathe stone

Germander Nebelthe fog

Spanishla nievethe snow

More ways to learn

Put your words
to work.

Build on your vocabulary with guided courses, grammar practice, listening comprehension and speaking encounters.

Courses

A path through your language.

Follow guided steps that bring vocabulary and grammar together, with a clear place to begin and a next step to return to.

Learn step by step

Grammar

Make sense of the sentence.

Explore a rule, see it in context, then put it into practice with focused exercises.

Understand and practise

Listening comprehension

Hear more. Understand more.

Listen to spoken scenarios and answer questions to check what you understood.

Train your ear

Speaking

Give your words a voice.

Practise conversations in speaking encounters and get feedback on your responses.

Put words into conversation

Course and activity availability varies by language. Some features require Pro.

Progress you can walk through

Your effort changes the view.

The dōjō is not a decorative dashboard. Its lanterns, gates, gardens, and halls arrive as you train. These are real unlocks from the product.

Level 2Paper lantern

Level 5Torii gate

Level 14Sakura tree

Level 15Moon bridge

Level 22Pagoda

Level 27Tea house

iOS & Android apps

Take the dōjō with you.

Your daily practice, wherever you are. Get Kotoba Dōjō on the App Store or Google Play, or train in your browser.