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35 LANGUAGES · A1 → C2

Learn a languageby reading and writing.

Read real texts at your level. Save the words you need. Write essays with AI feedback.

Not a flashcard app. A workspace where reading, writing, and vocabulary connect.

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3 days. No credit card. No auto-charge.

Browse the 35 languages
SAVED

matinée

morning

FR · A1
NEW

朝食

breakfast

JA · A1
EnglishSpanishGermanItalianRussianKorean+27

THE PROBLEM

The apps you've tried aren't teaching you the language.

They teach you the app.

  • Duolingo

    Streaks, not language.

    Five-minute drills you finish and forget by dinner. No reading. No writing. No place to actually use what you learn.

  • Anki

    Flashcards in a vacuum.

    You memorise a word in isolation, then never meet it in a real text. Your vocabulary lives in a silo — separate from anything you read or write.

  • Everything else

    Three apps, three silos.

    One tool for reading. One for drilling. One for writing. The words you save in one never come back in the others. You end up managing tools instead of learning.

Lex.

One place for reading, writing, and vocabulary — each one feeds the next.

Read leveled texts and save the words you meet. Those saved words come back as exercises. Write essays with the vocabulary you've built and get feedback that points you to the next thing to fix. No juggling, no silos.

HOW IT WORKS

Read. Write. Practice.

Three parts of one workspace — each feeding the next.

  • Read at your level.

    Short pieces calibrated to your CEFR level, A1 through C2. Tap any word, get a translation, and save it to your vocabulary in one motion.

  • Write and get feedback.

    Pick a prompt, write an essay, and Lex tells you where your structure breaks, which mistakes are blocking you, and how your level reads.

  • Practice what you've saved.

    Every word you save — from a text, a translation, or an essay — feeds spaced-repetition exercises. Your vocabulary and your reading share one workspace.

IN THE READING VIEW

Read the text.Save the words that stick.

The reading view is where most of Lex happens. Tap any word for a translation, save it, and it comes back in your practice and in your next text.

  • 01

    Tap any word for a translation

    A small panel opens next to the word — no leaving the text, no switching tabs.

  • 02

    Yellow: already in your dictionary

    Words you saved from previous texts show up yellow when you meet them again. Visible proof your vocabulary is compounding.

  • 03

    Green: added while reading this

    Every word you save during this session appears in green — you can literally watch your vocabulary grow within one text.

  • 04

    Saved words become practice

    Every word you save feeds spaced repetition. The next time you sit down to review, you're reviewing your own vocabulary — not somebody else's deck.

İstanbul'da ilk günüm

Turkish · Lex starter pack

Geçen ay İstanbul'a taşındım. İlk gün biraz heyecanlıydım çünkü bu şehirde hiç kimseyi tanımıyordum. Sabah erken kalktım ve kahvaltı yapmak için küçük bir kafeye gittim. Kafenin sahibi bana mahalle hakkında birkaç faydalı bilgi verdi. Orada yeni bir komşu ile tanıştım.

Tap → translateTR

komşu

neighbor

HOW YOU PRACTICE

Six ways to practice one vocabulary.

Every word you save is practised across multiple exercise modes. Not one shape of practice — six, so retention actually sticks.

  • 01

    Flashcards

    Reveal the translation, then rate how well you knew it. Standard spaced-repetition loop.

  • 02

    Match pairs

    Match each word with its translation. Fast pattern recognition.

  • 03

    Fill blanks

    Complete a sentence with the right word. Tests recall in context.

  • 04

    Multiple choice

    Pick the correct translation from four options. Recognition practice.

  • 05

    Typing

    Type the translation letter by letter. Active recall — the hardest, most useful mode.

  • 06

    Sentence translation

    MAX

    Translate a full sentence into the target language. AI grades your answer.

YOUR STARTING POINT

Start from your strongest language.

Every course adapts to the language you already think in. Translations, examples, and AI feedback all land in the source you pick.

English

English

The default source. Every target language is fully translated for English speakers — thirty-five courses ready today.

Azərbaycan

Azərbaycan dili

Full-locale support for Azerbaijani speakers, with twenty-three target languages translated so far and the rest arriving as content lands.

More source languages are on the roadmap — the two above are what we ship translated content for today.

35 LANGUAGES

The language you're learning is probably already here.

Thirty-five languages, all shipped with curated starter content. Tap any to see where it's spoken.

LEX VS THE REST

Lex vs Duolingo, Anki, and LingQ

One quiet place, instead of three loud ones.

FeatureLexDuolingoAnkiLingQ
Read real texts at your level
Essay writing with AI feedback
Vocabulary comes from what you read
AI generates new texts to read
Spaced-repetition review
Import your own texts
One calm place — no streaks, no drills

Every product listed here is a real one and worth its own users. This is where Lex sits differently.

TRY IT WITHOUT SIGNING UP

Check it out before signing up.

Paste an essay in any of 35 languages and we'll estimate your CEFR level with specific corrections — no signup, no card.

  • CEFR level estimate

    A1 through C2, with a short justification.

  • Specific corrections

    Real excerpts from your essay with suggestions.

  • What's working

    Strengths in structure, vocabulary, and voice.

PRICING

Three tiers. Pick whatever fits.

The 3-day trial covers everything. After that, pick a tier or stop — Lex never charges you without you explicitly subscribing.

Basic

$4/mo

  • Build vocabulary in 35 languages
  • Foundations reference — alphabet, phonetics, and grammar essentials for all 35 languages
  • 5 exercise modes — flashcards, match-pairs, fill-blanks, multiple choice, typing
  • Themed mini-units that build skills step by step
  • 3,000+ curated starter words across French, Spanish, Italian, German, English
  • Per-language CEFR tracking from A1 to C2
  • Word tags, bulk actions, search and card / table views
  • Light and dark themes
  • No ads. No tracking. Ever.
  • Export your vocabulary as CSV
  • Essay writing — in Pro
  • Reading section — in Pro
  • AI features + Foundations audio — in Max
Choose Basic
Most popular

Pro

$9/mo

  • Everything in Basic
  • Write essays with 70+ curated prompts across 7 topics
  • Custom essay topics — write about anything you want
  • Distraction-free essay editor with drafts and word count
  • Reading section — paste articles, emails
  • One-tap word lookup + phrase selection while reading
  • Hover any saved word to see its translation instantly
  • Save vocab on the fly as you read
  • Curated reading library — 60+ leveled texts
  • Filter reading by CEFR level
  • Markdown export of essays and reading texts
  • Print-friendly layouts
  • AI essay feedback — in Max
  • AI reading-text generation — in Max
  • AI word translation — in Max
  • Sentence-translation exercise — in Max
  • Foundations audio playback — in Max
  • Smart word recognition — in Max
Choose Pro

Max

$19/mo

  • Everything in Pro
  • AI essay feedback — up to 20 every day, with mistake list and CEFR level estimate
  • Essay feedback saved with each essay so you can track your progress over time
  • AI prompt generation — up to 30 every day, calibrated to your CEFR level
  • AI reading-text generation — up to 30 every day, your topic, length and level
  • AI word translation in reading — up to 500 every day, with native example sentences
  • AI sentence-translation exercise — build sentences from your vocab, graded in both directions, in all 35 languages
  • Foundations audio — native pronunciation for every letter, sound, and example, in all 35 languages
  • Smart word recognition — saved 'to call' automatically matches 'calling', 'called', 'calls' as you read
  • Priority support
Choose Max
3 days freeNo credit cardCancel anytime

A NOTE FROM THE FOUNDER

“Language apps got me good at quiz cards, but not at reading, writing, or actually using the language. Lex reverses that: read something real, save the words you meet, then use them in your own writing until they stick. I'm building Lex solo, in English and Azerbaijani, so more people can start from a language they already know — and reach one they want to.”

— Founder of Lex

Lex.

QUESTIONS

The things people usually ask first.

  • No. The trial lasts three days and doesn't require any payment details. If you want to keep using Lex after, you can subscribe at $4–$19/month. Nothing is charged automatically.
  • Yes. Cancel from the DodoPayments billing portal in two clicks. You keep access until the end of the period you've already paid for, then it stops cleanly — no follow-up charges.
  • All 34. Every language ships with about 100 curated vocabulary entries at each of six CEFR levels (A1 through C2), fifteen leveled reading texts, and essay prompts across seven topics.
  • Yes. A1-level vocabulary and short reading texts are calibrated for first-time learners. You don't need any prior knowledge to start a language from scratch.
  • Basic ($4) is vocabulary and exercises in all 35 languages. Pro ($9) adds the writing and reading sections. Max ($19) unlocks the AI features — essay feedback with a CEFR estimate, AI text generation, smart word translations — all with generous daily caps so you can actually use them.
  • Essay feedback, prompt generation, and word translations are powered by OpenAI's models. Your essays are sent to the model only when you ask for feedback — never to train it.

YOUR FIRST TEXT IS A GOOD START

A new language.In your own words.

Try Lex free for 3 days. Pick a language, save a few words, and write your first essay. No card, no auto-charge.

Start free trial

Paid plans after the trial. No auto-charge.