TAKE A GUESS
Is the Moon changing shape?
YesNo ✓
Curiosity starts with a question.01
Follow that “why?”
Space, your brain, the way money works. Start with something you’ve always wondered.
Now on the App Store
Less scrolling.
SMALL LESSONS. BIG AHA MOMENTS.
Less scrolling.
More “oh, now
I get it.”
Feed your curiosity. Play your way through big ideas in a few little minutes. And actually remember what you learn.
Free on iPhone. No ads. No signup.
Little wins. Lasting knowledge.Your curiosity is going places.
One idea smarter.
THE REAL APP. A LITTLE PREVIEW.
16 rabbit holes worth falling intoA few minutes for your curious sideZero ads. All aha.
YOUR NEW DAILY RITUAL
Big ideas.
Little everyday wins.
A question that pulls you in. A picture that makes it click. A little nudge so it stays with you.
MAKE IT CLICK
Small cards. Big connections.
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Play your way to “aha.”
Tap through visual explanations and give your new knowledge a quick workout.
BUILD A MEMORY
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From “I read that” to “I know that.”
Recall it. Strengthen it. Make it yours.03
Keep the good stuff.
Ideas return for a fresh question when they need a refresh. Your knowledge grows with you.
LET CURIOSITY PICK THE DIRECTION
Your next obsession
starts here.
Sixteen topics. So many “wait, really?” moments. Pick one and peek inside.
A LITTLE TASTE OF SPACE
Why the Moon changes shape
The Moon isn’t changing shape, and Earth’s shadow has nothing to do with it.
waiting in Curio
LESS SCROLLING STARTS RIGHT HERE
One minute.
One little
mind shift.
Don’t just read about Curio.
Give your curiosity a go.
- ✓ A real idea from the Curio library
- ✓ Guess, discover, then test your memory
- ✓ No account. No pressure. Yours to try.
☾ SPACE1 / 3 · Take a guess
TRUST YOUR INSTINCT
Why does the Moon seem to change shape?
A mini lesson, adapted from the app. Take your time.
A LITTLE REVIEW GOES A LONG WAY
Make room for “I remember.”
With a little practice Without review
An illustration of spaced repetition, not measured results.
That one’s becoming yours.
Three successful spaced recalls → locked in.
YOUR BRAIN DESERVES A FOLLOW-UP
Learning feels good.
Remembering
feels even better.
Interesting facts shouldn’t disappear by tomorrow. Curio brings ideas back for a quick recall, with a different question each time.
You’re building understanding, one small return at a time.
Give your memory something goodA HABIT THAT FITS YOUR LIFE
A little progress.
A lot to feel good about.
Finish your daily session. Grow your streak. Watch ideas move from new to familiar to locked in.
Busy day? Two automatic streak freezes each week give you breathing room. Your knowledge stays yours.
LITTLE BY LITTLE
Look at you growing.
M✓
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W✓
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❄︎ Life happens. Your streak gets it.EXAMPLE WEEK
STRAIGHT FROM THE APP STORE
Take a peek
inside Curio.
Real screens from the app. Swipe through, then make them yours in a few taps.
CURIOUS ABOUT CURIO?
Good questions.
What can I learn with Curio?
Explore 16 topics, including space, the brain, money, history, nature, food, language, and how everyday things work. Each idea is explained with visual cards, then practised with a mix of questions.
How much time does it take?
A few minutes, at your chosen pace. Your daily session mixes a small number of new ideas with quick reviews. Finish it and you’re done for the day.
How does Curio help me remember?
Curio uses spaced repetition to schedule reviews based on how you answer. Instead of showing the same question every time, it asks about the idea in different ways. Three successful spaced recalls mark an idea as “locked in.”
Is Curio free?
Yes. Curio is free to download, with no ads. Curio Plus is an optional subscription that adds up to three new ideas a day and Ask Curio. Every path and every review stays free. Prices for your country are shown in the App Store.
Do I need an account or an internet connection?
No account is needed. The core lessons and reviews work offline, and your progress stays on your device, with optional private iCloud sync. The optional Ask Curio feature needs an internet connection.
Where can I get Curio?
Curio is on the App Store for iPhone, on iOS 18 or later. Download it here, or scan the code below with your iPhone camera.
NOW ON THE APP STORE
Your next “aha”
is one tap away.
Free on iPhone. A few minutes a day. No ads, no account.
On a computer?Scan with your
iPhone camera.
Curio: Get Smarter · Free, with optional Curio Plus · iOS 18 or later · Rated 4+