On iPhone · Français · English · Español

Every expression hides a story.

Why does English rain “cats and dogs” while French speakers “fall into the apples”? Curioo turns idioms into illustrated stories you understand, remember, and actually want to tell.

Free · In-app purchases · iOS 16.4 or later

1,632
expressions
3
languages
12
games
  • The ball is in your court
  • Poser un lapin
  • Dar gato por liebre
  • Once in a blue moon
  • Avoir la moutarde qui monte au nez
  • Estar en las nubes
  • Break a leg
  • Tomber dans les pommes
  • Ser pan comido
  • It’s raining cats and dogs
  • Donner sa langue au chat
  • No hay moros en la costa

An expression, far more than a definition

Remember it with a picture.

Every expression has its own illustration, its meaning, its story and its equivalents in the other two languages. Pick one.

French

English

Spanish

French Common 19th century

Tomber dans les pommes

Word for word: to fall into the apples

To faint. To go down without warning.

The story

Most likely a slip of the ear. The old “tomber en pâmoison” — to fall into a swoon — wore down in everyday speech until the swoon became a crate of apples.

Elsewhere, they say

  • EnglishTo pass out
  • SpanishDesmayarse

Your daily dose of curiosity.

A new expression every day

A fresh gem every morning, and a reminder at the hour you pick — not the hour we pick.

Its story

The origin that makes an expression impossible to forget. You don’t remember a definition, you remember a scene.

The right usage

Register, context and a real example sentence, so you know when to drop it — and when not to.

Expressions of the world

Every card lists its equivalents: three cultures, three ways of saying the same thing.

Lock screen and home screen

Learn without even opening the app.

The expression of the day sits on your lock screen and your home screen. One glance is enough, and the days you never open the app still count.

  • Widgets included for free
  • A daily reminder at the time you choose
  • Alternate app icons, free as well

French, English, Spanish — all in one app.

1,632 expressions across three languages, with the interface available in all three.

FRANÇAIS

583 expressions

Including three from Québec, where the language took its own road.

ENGLISH

526 expressions

British and American turns of phrase, from Shakespeare to the open-plan office.

ESPAÑOL

523 expressions

Castilian expressions carrying eight centuries of Iberian history.

Same idea, three pictures

Wanting it all without giving anything up — each language found its own image.

  • FRANÇAISAvoir le beurre et l’argent du beurre
  • ENGLISHTo have your cake and eat it too
  • ESPAÑOLQuerer el pan y las tajadas

12 game modes

Think you got it? Prove it.

Recognising an expression and being able to use it are different skills. The games are there to get you from one to the other.

Question 1 of 3120

What does this expression mean?

“It’s raining cats and dogs”

12
game modes
40
levels per game
2
free levels in every game
  • Quick QuizFour meanings, one right answer.
  • True or FalseDoes it really mean that?
  • TranslationThe equivalent that survives the jump.
  • Guess the CountryRead the phrase, name its culture.
  • The ImpostorFive expressions. One was never real.
  • In ContextA sentence with a hole. One expression fits.
  • Mutant ExpressionOne word was swapped. Spot it.
  • Story ModeA branching story told in expressions.
  • DiscoverySwipe until one of them sticks.
  • Guess the ImageThe illustration is the clue.
  • 4 Pictures, 1 ExpressionFour scenes, one phrase.
  • SurvivalEndless. One mistake ends the run.

A look inside the app.

The screens as they appear on the App Store.

Every expression has a story: the expression list and the “Let the cat out of the bag” card
Remember it with a picture: three illustrated expression cards, including “When pigs fly”
Learn without even opening the app: the expression-of-the-day widget on the lock and home screens
French, English, Spanish: the same idea in all three languages, as widgets
Keep your streak alive: the day counter, the calendar, badges and progress
From big ideas to bite-sized cards: a mosaic of illustrations, one per expression
Think you got it? A quiz: what does “Raining cats and dogs” mean?

Free to start. Premium to unlock it all.

Free

Forever

  • The expression of the day
  • The daily journey and your streak
  • Badges, favourites and search
  • The widgets and the app icons
  • The first 2 levels of every game

Premium

Optional subscription

  • All 12 games unlocked from day one
  • Levels 3 to 40 of every game
  • Unlimited expressions
  • Every story
  • The calendar history
  • The premium themes

Price and duration are shown in the app before you confirm anything. The subscription renews automatically and can be cancelled at any time from your Apple Account.

Frequently asked questions.

Is Curioo free?

Yes. The expression of the day, the daily journey, your streak, badges, favourites, search, the widgets, the app icons and the first two levels of every game cost nothing. Curioo Premium is optional and unlocks the rest.

Which devices?

Curioo is available on iPhone, running iOS 16.4 or later.

Do I need an account?

No. Curioo works straight out of the box, with no account and no email address, and your progress stays on your device.

How do I cancel the subscription?

In your iPhone Settings: tap your name, then Subscriptions, choose Curioo and turn off renewal, at least 24 hours before the period ends. Deleting the app does not cancel the subscription.

New phone — how do I get Premium back?

Open the Premium screen in Curioo and tap “Restore purchases”, signed in with the same Apple Account you bought it with.

Is it useful if I already speak the language?

That is arguably who it is for. Idioms are the last thing a fluent speaker picks up, because they are the one part of a language no rule lets you guess.

The story hiding behind the words.

Download Curioo and discover a new expression today.

Download on theApp Store

Free · In-app purchases · iPhone