Supported Features
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Dark Interface
DuoFacts: Fun Facts & Trivia
Language Learning Flashcards
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Swap a spare minute for a surprising fact. Explore thousands of bilingual cards, build vocabulary in context, and keep daily knowledge on your Home Screen.
Did you know that octopuses have three hearts? Or that bananas are berries in botanical terms? DuoFacts turns thousands of surprising facts into quick, bilingual reads.
Dive into thousands of fun facts from around the world on bilingual flashcards. Read the same fact in two languages, build vocabulary in context, and pick up general knowledge at the same time.
Turn every subway ride, coffee break, or bedtime scroll into a "Wow, I didn't know that!" moment.
LEARN A NEW LANGUAGE WITH BILINGUAL FUN FACTS
Every fun fact appears in two languages side by side. Meet words and expressions in context and practice reading at your own pace—without lessons, tests, or study pressure.
BITE-SIZED KNOWLEDGE IN ABOUT 30 SECONDS
No long articles. Each interesting fact fits on a compact card and takes about 30 seconds to read. Swipe through a few whenever you have a spare minute.
DISCOVER SOMETHING NEW EVERY DAY
Move from psychology and science to history, nature, and everyday curiosities. Save the facts that surprise you, revisit them later, or share a card when you find something worth talking about.
FACT OF THE DAY WIDGET
Bring a daily fact straight to your Home Screen. Customize the font, background, and widget size to match your style, then discover something new without opening the app.
THOUSANDS OF AMAZING FACTS TO EXPLORE
Choose the topics that match your curiosity:
- Psychology & Human Body: Behavior, memory, emotions, and the brain.
- Science & Space: Discoveries, black holes, physics, and the universe.
- History & Culture: Overlooked events, traditions, and details from the past.
- Animals & Nature: Unexpected abilities and behavior across the natural world.
- Life Hacks & Everyday Knowledge: Useful tips and practical curiosities.
- Creepy & Mysterious: Unsettling facts and unexplained stories.
KEY FEATURES
+ Save favorite facts and return to them anytime.
+ Create stunning quote cards to share on Instagram Stories, TikTok, or iMessage.
+ Smart notifications to build a daily learning habit.
+ Smooth swipe interface, perfect for one-handed use on the go.
Download DuoFacts and turn a spare minute into a new discovery. Read fun facts, keep language learning in your routine, and give your curiosity something fresh every day.
PREMIUM ACCESS
A starter set of categories is available without Premium.
Upgrade to unlock the full library and additional themes and features.
Privacy Policy: https://www.phamcham.dev/duofacts/policy
Terms of Use: https://www.phamcham.dev/duofacts/eula
Ratings & Reviews
Discover fascinating facts and expand your horizons!
What’s New
• We’ve updated and expanded our collection of surprising facts.
• Performance improvements and minor bug squashing.
• I’m traveling the globe to keep gathering fresh knowledge just for you.
The developer, Trung Pham Quang, 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
- Location
- Identifiers
- Usage Data
- Diagnostics
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Trung Pham Quang
- Size
- 105.5 MB
- Category
- Education
- Compatibility
Requires iOS 16 or later.
- iPhone
Requires iOS 16 or later. - iPad
Requires iPadOS 16 or later. - iPod touch
Requires iOS 16 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 11 more
- English, French, German, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Yearly Subscription $17.99
- Lifetime Premium $49.99
- Monthly Subscription $7.99
- Copyright
- © PhamCham