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Learn the English you already read, one phrase at a time.

Paste a reading or a meeting transcript. Lexio finds the phrasal verbs, idioms and expressions in it and turns the ones you pick into lessons and exercises. Free for macOS and Windows. Everything stays on your computer.

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Lexio. Today Practice Material 4

3 of 12

Phrasal verb come up with

She came up with a better plan for the launch.

Idiom bite the bullet

We had to bite the bullet and rewrite the tests.

Collocation take into account

Take the time zones into account when you plan the call.

Expression by the way

By the way, the demo moved to Thursday.

Phrasal verb touch base

Let's touch base after the release.

I know it Skip Learn it

← know · → learn · ↑ skip

come up withAdded to learn

How it works

Your texts in. Real English out.

Not a word list someone else picked. The phrases come from what you read and hear at work.

Lexio. Today Practice Material Progress 4

Add a text

Paste it, or import a .txt file.

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Team sync — March 3

5 expressions

Pick what to learn

Phrasal verb Idiom Collocation Expression

1 of 5

Phrasal verb figure out

We still need to figure out the budget.

Idiom on the same page

Let's make sure we're on the same page.

Collocation make a decision

Design will make a decision by Friday.

Expression as far as I know

As far as I know, design will decide.

I know it Skip Learn it

New phrase

figure out Phrasal verb

To understand or solve something by thinking about it.

In Spanish

averiguar, resolver

Examples

“I can't figure out why the build fails.”

In a conversation

A: Did you fix the login bug?

B: Not yet. I'm still trying to figure it out.

Got it, let’s practice

Which one fits?1 of 6

Can you help me ______ why the build fails?

figure out
wrap up
make a decision

Correct!

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Private on your computer, with your key or free with Claude.

The AI writes the meaning, examples and exercises for each phrase. You pick which one in Settings.

AI on your computer

100% private: nothing leaves your computer. It downloads once and works offline.

Or with your key

Paste your OpenAI, Claude or Gemini key. It's stored in the system keychain, never in Lexio. Only the phrases go to the provider.

Or copy and paste

No key and no download: copy the prompt, paste it into Claude and paste its answer back.

What it does

The English people really use, from your own texts.

Your texts, your phrases

Readings, articles or meeting transcripts. A built-in list of about 1,800 phrases finds them, even without AI.

A lesson, then practice

Meaning, when to use it, examples and a short dialog. Then six kinds of exercises so it sticks.

Private by design

No account and no server. Your texts and progress are one file on your computer.

Your progress

From new to mastered, one session at a time.

Every phrase has a level. Each practice session moves it up. A daily streak keeps you coming back.

Open source · MIT

Built in the open. Build it with us.

Lexio is free and every line is on GitHub. Fix a bug, add phrases, improve a translation or build the next feature. Download it, use it, and send your changes.

1. Fork it

Make your own copy on GitHub and clone it.


                $ pnpm install
                $ pnpm desktop
                ✓ Lexio is running

2. Run it

Node 20, pnpm and Rust. The app opens with live reload.

3. Open a PR

Branch from main, run pnpm check and open the PR. CI builds both apps for you.

Good first contributions

Add phrases to the built-in list New kinds of exercises Improve a translation Report a bug

See the code on GitHub How to contribute Ideas and bugs

The first time you open it

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Open the .dmg and drag Lexio to Applications.
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If you’re technical

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