NumberDex
Collect numbers. Find stories.
$0.99 · Designed for iPad. Not verified for macOS.
Swipe, merge and discover the stories behind numbers. Build your 100-card NumberDex in ten languages.
Every number has a story. NumberDex turns curious numbers into a collection you can explore.
Swipe and merge tiles in number challenges. Discover special numbers, unlock cards and read the facts behind constants, powers, codes, scientific values and cultural symbols. Explore a catalog of 100 cards and try the daily quiz.
- Merge numbers and discover milestone cards.
- Collect cards about math, science, the internet, history and culture.
- Read short explanations and explore connections between numbers.
- Browse locked, unlocked and mastered cards in your Dex.
- Enjoy local sound effects, haptics and selected voice feedback.
Choose from English, German, French, Spanish, Italian, Portuguese, Japanese, Korean, Traditional Chinese and Simplified Chinese. The app starts in English; switch languages in Settings. Voice recordings are available in English and Simplified Chinese. Other interface languages use English audio.
No account, no ads and no internet connection required to play.
Privacy Policy: https://www.owlworks.top/legal/numberdex/privacy?locale=en-US
Terms of Service: https://www.owlworks.top/legal/numberdex/terms?locale=en-US
EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Discover more numbers in your language.
- Added German, French, Spanish, Italian, Portuguese, Japanese, Korean and Traditional Chinese.
- English is now the default on first launch. Change language in Settings at any time.
- Localized all 100 cards and improved language switching without resetting your game.
The developer, 彬彬 丁, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 彬彬 丁
- Size
- 96.9 MB
- Category
- Education
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
English and 9 more
- English, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 OwlWorks
