Our mission For users For creators Features Early access Discover
Knowledge worth scrolling for

What if scrolling left you knowing more?

Circin is a short-form learning platform for curious minds. Discover ideas, learn from the people who know them, ask questions, explore deeper — and turn a few minutes of your day into something you can carry with you.

Come curious. Leave knowing something you didn’t before.

Circin is new, so there is not much in the feed yet — it fills as creators publish.

Free · made for your phone · coming to the App Store

Science → Chemistry
Go deeper ↓
Why we are building this

The internet learned how to capture attention.

Now we want to see what happens when some of that attention is pointed at curiosity.

Short-form changed how people discover music, culture, people and ideas. Circin takes a familiar way of exploring and builds an environment around learning. Instead of only asking “what can we show you next?” we also want to ask “what might you want to understand next?”

That small difference shapes the whole platform.

Not school. Not mindless scrolling.

Somewhere in between is an enormous opportunity.

Circin is not built to replace classrooms, teachers, books, universities or hands-on experience — and it isn’t trying to turn every second of your life into studying. It is another doorway into knowledge.

A video might teach you something by itself. Or it might introduce a subject you spend the next ten years on. It might answer a question, or give you a better one. It might make someone who never thought they were interested in physics suddenly wonder how gravity actually works.

Sometimes learning begins with a textbook. Sometimes it begins with “wait… why does that happen?” Circin is built for that moment.

Circin as a doorway between wondering and deeper learning A moment of wondering leads to a short video on Circin. Sometimes that gives an answer, sometimes a new question. Either can lead on to books, classes and teachers, which sit outside Circin and which Circin does not replace. IT STARTS WITH Wait, why does that happen? ON CIRCIN A short video watch free, no account SOMETIMES An answer that is enough SOMETIMES A new question you keep going OUTSIDE CIRCIN Books, classes, teachers Circin replaces none of them
DrawnA doorway, not a destination. The dotted path is optional: watching one video and stopping is a complete way to use Circin. This is a drawing of the idea, not a measurement — Circin counts views, and nothing about what anyone learned.
The Circin loop

Learning should have momentum.

A Circin video doesn’t have to be the end of an idea. It can be the beginning.

1

Discover

Something you didn’t know turns up.

2

Understand

An explanation built around one focused idea, rather than a whole subject at once.

3

Question

The creator is there to ask, and so are the people learning alongside you. Questions get their own space, separate from comments.

4

Go deeper

Related concepts, prerequisites, the sources behind the claim, and somewhere to go next — if you want them.

5

Remember

It can carry a private review out of five, sit in a collection you named, and still be there when you come back.

6

Share

It travels, if there is someone who would want it.

7

Create

And what you learned is eventually something you could explain to someone else.

Curiosity creates a loop. Circin is designed to keep it moving.

Unique to Circin

Unique features of Circin, for you.

Pick a feature — the phone jumps to that screen in the live app. Tap and swipe inside it.

Live app · Feed

Circin doesn’t ask for a heart — it asks what you thought. When a video ends you give it one to five stars, the way you’d rate a lesson rather than a friend, and nobody but you sees how you rated. Everything you give three stars or more is kept for you in your Rated tab, sortable by star, so the explanations that actually landed are always one tap away.

For under-13s: a kid profile on a parent’s phone, not an account of their own. A kid sees only what has been cleared for Circin Kids: a video someone uploads is invisible there until a person approves it, and Circin’s own sample library is admitted by a Subject rule rather than by a person — the Admin queue counts how many a person has actually decided. A kid can’t comment or message anyone, and nothing about what they watch is sent to Circin — no email, no name, no history. Their likes and collections live on that phone, behind the parent’s PIN.

Your own account, with your kid’s profile underneath it. You choose a four-digit PIN, hand the phone over, and your account waits behind it — leaving Kids mode or changing its settings needs the PIN. When your kid turns thirteen, you decide whether the profile becomes a full account. Nothing about your child leaves the phone without you.

Curiosity that hasn’t been answered yet. Ask for the explanation you want — a topic, a question, a why — and it goes on a public board creators read, where other people can upvote it. The most-wanted explanations are the ones that get made, and when a creator answers yours with a video, you’re told.

Eight subjects and fifty-four subcategories — Science, Math, History, Coding, Finance, Philosophy and more. Pick one and the feed becomes only that; pick a subcategory to go narrower; follow a subject and more of it flows into your For You. Search is literal: type math and you get Mathematics, Algebra and Calculus, never whatever is trending this week.

Not everyone learns the same way. Tell Circin how you like things explained — a Lesson, a Learn-Along, something Hands-On, an Analysis — and your mix leans toward that. Every video carries its style, so you know what you’re getting before you tap.

Tell Circin where you are — Introductory, Beginner, Intermediate, Advanced — and it meets you there instead of guessing. A creator can say what level they are pitching at, and when they have, the video shows it — so a first look and a deep dive don’t get mixed into the same swipe. Your answer ranks what you see rather than hiding anything, and you can change it whenever you like.

Your own shelf. Save videos into folders you name, keep the topics you mean to come back to, and let the Rated tab gather everything you gave three stars or more. Collections stay on your phone — your curiosity, in one place, on your terms. Sharing one with somebody else is still to come.

Creators on Circin are people with something to explain, and they show their work: the sources behind a video sit one tap away. Follow the ones worth hearing from and their new videos land in your Following feed; ask them in the comments, and the best questions become their next video. Creators can sign up and publish before launch.

You’re not watching alone. Comments are for questions as much as reactions — questions get their own filter, replies thread underneath, and you’re told when someone answers you or follows you. Follow the people asking good questions and find the ones curious about the same things you are.

Start anywhere.

Pick something you're curious about. Circin helps you see where it connects next.

Science · Space and Astronomy
How we weigh a black hole
Watch the stars orbit nothing.

One answer usually leads to another question.

Every video connects to the ideas behind it, so there is somewhere to go other than on to the next one.

Go deeper
Science → Space and Astronomy
Sources on this video
Creators attach papers, books and articles — so the explanation has somewhere to go next.

Learn from people worth hearing from.

Researchers, professionals, teachers, and people who simply know something fascinating.

These four are samples. Demo profiles written to show the shape of a Circin creator — not people who have joined. Nobody has published yet, which is rather the point of being early.

Explore creators

The platform being born

What will Circin know on Day One?

Circin starts with the people who show up with something worth sharing. Every subject is still open — that's what early means.

Know something about one of these?

Circin could use a voice here.

Become an Early Creator

Nothing worth remembering has to get lost.

Videos can be saved as you scroll and organised into a Library that is yours, arranged however makes sense to you.

Build your Library

Circin is new, so there is not much in the feed yet — it fills as creators publish.

♥LikedEverything you heart
▤Study LaterFor when there's time
⚗Biology Exam Review8 videos · Science
∑Algebra Practice5 videos · Math
Sample exchange · on Why salt actually melts ice
Question@confused_casey
Why does the road get colder while the ice is melting? That feels backwards.
@mayachenchem
Great catch — melting takes energy, and the salt water pulls that energy from itself and the road. Backwards-feeling, but right.

Curiosity doesn't stop at the video.

The question that came next has somewhere to go. Creators answer — sometimes with a whole new video.

There is more than the explanation.

Creators add sources and references, so you can explore the ideas behind their videos — not just take their word for it.

What a source on a Circin video carries A creator adds a source, with a note or a link if they have one. If they pin it to a moment, it shows a time chip that jumps the video there. If they sort their sources, up to three group headings appear. A link opens after a Leaving Circin screen that names the site. Circin verifies none of it. THE CREATOR ADDS A source they cite type and title, maybe a note or link IF PINNED TO A MOMENT A time chip, like 0:22 tap it and the video jumps there IF THE CREATOR GROUPS THEM What this is based on · Also referenced Where to go next WHEN A LINK OPENS A “Leaving Circin” screen names the site, then your browser THE LIMIT Circin verifies none of it Example: a sample video’s paper at 0:22
DrawnA source can point at the exact moment it supports. The note, the link, the moment and the groups are all optional and the creator’s own. Circin checks none of them, and the sources sheet in the app says so. In Circin Kids a parent gate stands in for the leaving screen. A drawing of the mechanism, not a screenshot.

Knowledge changes.

When something changes, Circin keeps the update connected to the original explanation — instead of pretending the old version never existed.

How a correction stays connected to the original video The original video stays as it was published and keeps its date. The creator attaches a dated correction saying what was said and what is right. The video card then shows a Correction badge, and a time chip in the updates sheet jumps to that spot when the creator named a time. People who already watched are not told. THE ORIGINAL Stays as it was published its publish date is kept THE CREATOR ATTACHES A dated correction what was said, and what is right ON THE CARD A badge says “Correction” IN THE SHEET A time chip jumps to that spot THE LIMIT Past viewers are not told Example: a sample correction at 0:19
DrawnThe correction sits beside the original, never over it. The time chip appears only when the creator names a time. Nothing notifies someone who already watched, so a correction reaches whoever comes across the video again. The example is from one of Circin’s own sample videos.
For parents

Kid accounts, done right.

Your kid gets a real account of their own — a name, an @username, an avatar, their own likes, collections, follows, and subject picks. It’s made on your phone, you set a parent PIN for it, and everything stays on your device.

What they watch is the difference: only videos picked for under-13 — for now by a subject-and-style rule, until a person has reviewed each one — with no comments, no messages and no posting. And when they turn 13, you unlock the full account and their whole library grows up with them.

How kid accounts work →

Kid account
Their own little world A name, an @username, likes, collections, and follows — theirs to build. Only videos picked for under-13 Chosen by a rule until a person has reviewed each one — no comments or messages. You hold the PIN Made on your phone, protected by your PIN, stored only on your device. Grows up with them At 13, unlock the full account — their library and follows come along.
For creators

Be early to the knowledge game.

Circin launches November 21. Start building your presence before the platform gets crowded — share what you know, establish your Subjects, and be there when the first curious viewers arrive.

Analytics
Views, honestly counted
Three seconds of watching, once per person per day, and never your own. Watch time, retention and the share who went deeper are not measured yet, and the screen says so rather than showing a number nothing took.
Knowledge demand
People are curious about…
"Why does time move differently near massive objects?" · Physics · Growing interest
Community
Questions, answered
Pin context, reply to questions, and turn the best ones into your next video.
Sources
Show your work
Attach the papers, books and articles behind your explanations.

Join as an Early Creator   See Creator Tools

Why Circin?

The attention economy isn’t going away. So let’s build better things inside it.

The thesis is simple. People already use short-form to explore. Creators already know how to communicate through it. Phones are already part of how people learn. AI is making access to information dramatically easier. What stays valuable is curiosity, explanation, context, trust, human experience, and knowing where to go next. Circin brings those pieces together.

What makes Circin different

It isn’t one feature. It is the system.

Short-form discovery

Lowers the barrier to beginning.

Knowledge Demand

Lets curiosity influence what gets made.

Creator tools

Make explaining easier than posting.

Sources

Make checking part of the experience.

Questions

Turn watching into conversation.

Go Deeper

Connects a short explanation to larger understanding.

Reviews

Reflection instead of another public popularity score.

Collections

Scattered discoveries become a personal library.

Subjects, levels, styles

Control over what you learn and how.

Kids Mode

A fundamentally different experience for younger users.

Brain Breaks

The goal was never endless screen time.

Together they are something bigger than an educational video feed: infrastructure for a learning community.

The Circin loop

Learners make creators more useful. Creators make learners more curious.

Curiosity creates demand Demand creates opportunity Creators create knowledge Knowledge creates discovery Discovery creates questions Questions create new demand

A learner has a question. Creators see what people want explained. Someone makes the explanation. It reaches the people interested in the subject. They discuss, review, save and go deeper. The cycle begins again. That is the Circin network.

What Circin is not

Something is missing between “I wonder…” and “I understand.”

Circin isn’t a replacement for school, for teachers, for books, or for long-form learning. It isn’t an answer machine, and it isn’t trying to eliminate entertainment. It is a place for everything that happens in between.

Our ultimate vision

Five minutes, and the ocean leads to marine biology, to climate systems, to a question someone studying it answers.

A week later there is a whole collection saved. A month later you are reading about it somewhere else. Maybe nothing more happens. Or maybe you have found something you will care about for the rest of your life. That is the possibility Circin is built around — not making everyone study every time they open their phone, just making it easier for curiosity to become something more. The next thing someone learns has to begin somewhere.

What we hold ourselves to

Endless scrolling isn’t the goal.

That would rather miss the point. Circin has screen-time awareness, Brain Breaks and Continue Watching, so you can stop without everything you were exploring disappearing.

Success shouldn’t mean “how long did we keep someone on the app?” A better question is: what did their time here lead to?

Why we’re building it this way →

What are you curious about?

There's probably someone on Circin who can't wait to explain it.

Circin is new, so there is not much in the feed yet — it fills as creators publish.

QR code — open circin.org/demo on your phone
Scan to try Circin
App Store & Google Play coming soon