Curioo: English Expressions
Idioms, Origins & Word Games
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Discover new expressions every day in French, English, and Spanish. Learn what they mean, where they come from, and their equivalents, then remember them through play.
Why does English rain “cats and dogs,” while French speakers “give their tongue to the cat”?
Curioo turns idioms into stories you’ll understand, remember, and want to share. Explore 1,000+ French, English, and Spanish expressions and discover what they reveal about each language and culture.
MORE THAN A DEFINITION
• Understand every meaning through clear explanations.
• Uncover the origin and story behind each expression.
• Learn when and how to use it with real-life examples.
• Compare equivalents across French, English, and Spanish.
• Save your favorites and find them again in seconds.
LEARN BY PLAYING
Challenge your memory with quizzes and games built around images, context, translation, deduction, and survival. Level up, earn badges, keep your daily streak going, and track your progress.
YOUR DAILY DOSE OF CURIOSITY
Discover fresh expressions every day and schedule a reminder for a time that works for you. Search by language, theme, or culture, then explore immersive stories at your own pace.
MADE FOR
• Language learners building real-world French, English, or Spanish vocabulary.
• Curious minds who love words, surprising stories, and culture.
• Students, travelers, and quiz lovers.
• Anyone who wants to speak more naturally and broaden their cultural knowledge.
Download Curioo and uncover the story hidden behind the words.
Curioo is free to download. Some expressions, stories, games, and customization options require an optional Curioo Premium subscription. The price and duration are shown before purchase confirmation. The subscription renews automatically and can be managed or canceled in your Apple Account settings.
Privacy Policy: https://curiooapp.com/en/privacy/
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
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Improvements to the design, widgets, and game.
The developer, Corentin Settelen, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Corentin Settelen
- Size
- 117.1 MB
- Category
- Education
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Curioo Yearly Welcome $13.49
- Curioo Yearly Offer $10.99
- Curioo Yearly $17.99
- Curioo Monthly $3.99
- Copyright
- © 2026 Curioo