Why do we say “let the cat out of the bag”? Why is Friday the most anticipated day of the week? Why do some words hide surprising stories? Wonder Why is a small daily pause for curious minds: one curiosity a day about words, expressions, etymology, conventions and the little oddities of everyday life. It isn’t a generic quiz app, and it isn’t a dictionary. It’s a short, smart and slightly ironic daily ritual for understanding why the world — and especially language — works the way it does. What you’ll find every day • A new curiosity that’s clear, surprising and memorable • The stories behind everyday words, expressions and habits • Etymology explained simply, without an academic tone • Curiosities about the human body, animals, nature, space and technology • A quick quiz to test your intuition Why you’ll come back • One curiosity a day, without taking over your time • Streaks and badges to keep the habit alive • An archive of the curiosities you’ve already discovered • Local notifications, delivered when you prefer • Content in English, Italian, Spanish and French Who it’s for For anyone who stops and thinks, “Wait — why do we say that?” For people who love words, unexpected stories and the small explanations that make an ordinary day a little more interesting. Download Wonder Why and discover today’s curiosity.