Learn a language inside
what you actually listen to,
watch, and read.

Start learning today

Choose something to listen to, watch, or read, tap what you don't know, and let the words come back to you. Three steps, and the third one repeats.

• Books
• Articles
• Web pages
• Documents
• Videos
• Songs
• Recordings
• Notes

1. 1

   Choose something to listen to, watch, or read

   The hundred most-read public-domain books in your language are one tap away, and the whole catalogue is searchable. Or bring a song from Spotify, a YouTube video, an article, a note, or the address of a page.

2. 2

   Listen, watch, or read, and tap what you don't know

   A tapped word shows its meanings in your language, with the sentence it came from. Ask for a translation of the sentence when you want one, or a grammar note. Have the text read aloud at normal or slow pace.

3. 3

   Let the words come back to you

   Every word you save has a level: New, Recognise, Understand, Use. What you listen to, watch, and read, and short reviews, are the evidence; the model suggests a change and you decide. Nothing moves without you seeing why.

A reader built
for not knowing yet

Meanings in context, sentence translation on demand, grammar notes and a sentence-structure view.
Every saved meaning remembers where it came from.

Listen, watch, and read in one delightful reader

Three ways to read: the whole text, a page at a time, or one sentence.
Have it read aloud at normal or slow pace, and look up anything on the page.

Go beyond listening, watching, and reading

Words come back in short reviews when they are due.
Progress is worked out from the words you actually know.

The science inside

Nineteen methods from the research on memory and language learning, each under its research name, with its studies linked in the app. Several switch on by themselves as your level grows.

• Every word on its own schedule

  Each word you save gets its own review dates from FSRS, the open-source spaced-repetition algorithm, set so that nine times in ten you still recall it when it comes back.

  Spaced repetition · Cepeda et al. 2006 · Ye, Su & Cao 2022

• Recall, not just recognition

  Up to five ways to bring a word back, from recalling its meaning to typing it or writing it from dictation. A word you miss returns a few cards later, until it comes.

  Retrieval practice, successive relearning · Roediger & Karpicke 2006 · Rawson et al. 2013

• Texts you can follow

  Before you open anything, see what share of its words you already know. Research puts easy reading at about 98%; the rest you can pick up from context.

  Lexical coverage, incidental learning · Nagy et al. 1985 · Hu & Nation 2000

• Evidence, not guesses

  Your own rating is where each word starts. Lookups, finished texts, reviews and listening update the model's view of it, forgetting included, and every change it suggests is traced to its evidence.

  Levels of word knowledge · Nation 2001 · Laufer & Goldstein 2004

• An honest level check

  A two-minute adaptive vocabulary check, with made-up words mixed in to catch guessing. It says “About B1” until the evidence narrows it to one level.

  Adaptive testing (Rasch), vocabulary size · Milton & Alexiou 2009

• Listening that knows what's due

  Listening loops replay sentences from your own texts, and play the ones holding a due word twice, spaced apart within the loop.

  Repeated listening · Vandergrift 2007 · Webb & Chang 2015

Bring your own texts

Paste an article, a note or song lyrics, upload an EPUB, PDF or Word file, or give the address of a page.
It opens in the reader with the words you have met already marked.

Everything in one place

Today shows what to read next and what is due, Vocabulary keeps every word with its level, and Progress shows your reading, your words and your estimated level, per language.