9:41
New word
Give it a home before it disappears.
Word
serendipity
Meaning
a fortunate discovery by chance
Card ready
Saved with an example at your level — ready for review.
Save to Cardo
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You found the word.Now make it yours.
Bring the words you meet while reading, watching, and living into Cardo. Study them with examples at your level — and come back before they fade.
Tap the card to open the example, then reveal the meaning.
The familiar problem
Your vocabulary is scattered everywhere.
Notes, screenshots, and dictionary history don’t become a habit. The words pile up — and learning doesn’t.
01 · Collect
Give every new word a place.
Bring in a word you found while reading, watching, or living. Cardo turns it into a card you can return to — not another forgotten note.
02 · Context
A word makes more sense in a sentence.
A new word can feel hard. The sentence that explains it should match your level, so meaning sticks with context — not a bare translation.
9:41
In context
A sentence matched to your level.
Wordserendipity
Example · B1
She found the old photograph by serendipity.
From this sentence
photographAdd card
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03 · Review
Know what to review today.
See what’s due, focus on weak words, and keep a short session that fits into the day.
9:41
Good morning, Maya
A few words are ready when you are.
Today's review
8 cards ready
Due now based on how hard each word felt last time.
Start today's session
12Streak
24Cards
7Mastered
Recently addedSee all
serendipityToday
wanderlustYesterday
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How remembering works
Practice remembering. Come back over time.
Try to recall the meaning before revealing it. Cardo schedules your next review based on how difficult the word felt.
Built on spaced practice and retrieval practice — well-studied learning principles, not a claim that Cardo itself was clinically proven.
Keep learning from what you love.
Join early access and be first to bring the words you meet into a study habit that lasts.
Questions
- What is early access?
- A small group gets Cardo first so we can shape the product with people who already collect words while reading, watching, and living.
- Which languages does Cardo support?
- You can learn Spanish, German, French, Portuguese, Italian, Japanese, Korean, and Chinese. The app interface is available in English, Turkish, and German.
- Is Cardo free during early access?
- Yes. Early access is free while we learn what helps people keep coming back to their words.