Duck — Know the words before you press play

See for yourself

A tiny sample deck — four cards, one minute.

1 · Set your level

A2 B1 B2 C1+

2 · Pick a title

Stranger Things

Fallout

The Office

A Knight of the Seven Kingdoms

100,000+ movies and episodes inside

3 · Pick the words to learn

nerve-racking

so tense that it makes you anxious

Added Ignored

sacred duty

a task you must do because it is holy or deeply important

Added Ignored

radiation levels

how much dangerous radiation is in an area

Added Ignored

vault

an underground shelter built to survive a nuclear war

Added Ignored

Your deck · 0

Learn before you watch

Preview the words

vault

an underground shelter built to survive a nuclear war

Pick your episode — we’ll suggest words and phrases from it, just above your level.

Enjoy — and notice

…to participate in the Triennial Trade with Vault 32.

You catch the words you previewed — and that joy of recognition is a huge learning boost.

Remember forever

Each card comes back right before you’d forget it. The gaps grow until the word doesn’t need Duck anymore.

Built on proven learning science

Just above your level — where you learn fastest
Real scenes, not word lists — you remember the scene, and the word comes with it
Spaced repetition, built in — the most proven method there is, with just two answers: know it, or still learning
Learn from what you love — strong feelings make strong memories

Your tutor learns your vocabulary word by word — and the zone moves with you.

Ask about a phrase. It’s already a card.

Ask in the chat about any phrase and get a quick answer. Want to keep it for good? The card is already made — one tap adds it to your deck.

The rest of your cards live in the chat too:

Put it in your own words — type straight into the card before you save
Edit by asking — “shorten the back”, “add an example”, “delete the card about tax” — the chat shows the change and waits for your OK
Paste a text, get the words — the chat picks the vocabulary out of any text you paste, and the cards land in your deck to sort

Prefer a list? There is a plain cards page too.

For the word nerds

The parts we built because we wanted them ourselves.

FSRS-6 scheduler — state of the art, zero knobs to tune
CLI access to your deck, for your own tools and scripts
Export everything as JSON — your data is yours
Open API for adding cards from anywhere

$ duck cards add "hunker down"

✓ card built — hunker down (C1, phrasal verb)

$ duck deck export --json > my_words.json

✓ 1,284 cards exported

Know the words before you press play

See for yourself

Learn before you watch

Preview the words

Enjoy — and notice

Remember forever

Built on proven learning science

Ask about a phrase. It’s already a card.

For the word nerds

Ready for tonight’s episode?