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A reaction, a prediction, the line you can't get over. It anchors to that exact page.
However far ahead you are, they see nothing. No spoilers, ever.
They read your words at the exact spot you left them. Reading together, even when you're apart.
Live demo
Maya, David, and Priya are reading Tomorrow, and Tomorrow, and Tomorrow. They've left notes along the way. Drag forward to discover them. Like the ones that land. Leave one of your own.
Watch the notes appear, or take over any time
The demo shows the core. Here are six of the touches that make a shared read feel alive, and keep it completely spoiler-proof.
Notes from friends are invisible until you reach the exact chapter where they left them. Not hidden by a warning. Not collapsed behind a tap. Genuinely invisible, and then suddenly, exactly when they meant it to land, there they are. The system enforces it. You cannot cheat it. Neither can anyone else.
Each reader gets their own color. Their dots mark every chapter they've touched, so even before a note unlocks, you can feel their presence moving through the book alongside you.
Kindle, Audible, Libby, paperback, a copy from the library. Whatever you're already reading, on whatever device you use. If the book isn't in the catalog yet, just enter the title. inkwool works around your reading life. It doesn't ask you to change it.
No character limit stress. No engagement metrics. No algorithm deciding who sees it. What you leave is a note. Private to the room, anchored to the chapter, written for the person you know is coming. It asks nothing of you except honesty.
Sarah left that note eight months ago. You're reading the book now. It still finds you. At chapter 22, exactly as she intended. A note in inkwool doesn't expire. It waits. However long it takes, it's there when you arrive.
The bigger picture
Your book club doesn't end when the book does. inkwool rooms have names. Names that mean something to the people inside them. When you finish a book, your group is still there. One tap to open the next room together, carrying your people with you.
"Sarah's Book Club" isn't a room. It's a relationship. One that moves from book to book, carrying every reaction, every note, every moment of pure disbelief along with it.
For book club leaders
The book club leader sets questions that unlock chapter by chapter. Just like notes. Members encounter them at the right moment, not all at once. By the time the group meets, the conversation has already started. And questions set for the end of the book? They keep the room alive long after the last page.
"The best book club questions aren't answered at the meeting. They're answered in the margins. As you read, at the chapters that earn them. The meeting is just when you compare notes."
Questions set by Sarah · unlocking chapter by chapter · available to the room forever.
The moment you want to share
Somewhere in every great book, something shifts. A line lands and you have to put the book down. You feel something at a specific page. Something you need to share with someone who will understand.
But sharing that feeling has always been broken
Someone hasn't reached that chapter yet. One message ruins it for them forever. So you say nothing. The feeling slips away unsaid.
By then the feeling has faded. The conversation you wanted, about that exact scene, never quite lands. Memory softens. The window closes.
The reaction you had, the one that mattered, vanishes. Every time. You close the book and the moment is gone.
What if that connection had a home? Not a chat. Not a spoiler. The exact feeling you had, waiting at the exact page. For the person who's ready to feel it too.
This is inkwool.
The time dimension
Not the summary. Not the review. Not the conversation three weeks later when the feeling has faded. The reaction you had at page 247. That is what inkwool preserves.
She read it last spring. You finished it fourteen months later. Her notes are still there. At every chapter that mattered. The window didn't close. inkwool held it open.
Your father read everything. He had something to say about every page. Those reactions lived only in his head. Until now. inkwool lets the people we lose leave something behind.
Three friends. Different cities. Different schedules. The same book across six weeks. Their reactions don't wait for the monthly call. They arrive at the right page, exactly when they should.
"Some notes outlast the people who wrote them."
That is what we're building.
Who inkwool is for
The mechanic is the same whether the text is a novel or a casebook, a scripture or a spec. Position is position. inkwool is for anyone who reads the same thing alongside someone else, and has something worth saying along the way.
Their notes find each other at every chapter that matters. No phone call. No waiting. Just the right words at the right page.
inkwool keeps the feeling of your best reading group alive. Across years and time zones. The conversation doesn't wait for a reunion. It's already there, at every page.
The meeting becomes richer, not redundant. You arrive at it having already been there together. Every reaction preserved at the page where it happened.
Leave notes for yourself as you read. Reactions, questions, the line that stopped you cold. Build a shelf of annotated books over months and years. Then, when a friend picks up something you've already read, your notes are already there. Waiting at every page. The conversation starts the moment they open the book.
The pattern is always the same: people reading the same thing, with something worth saying along the way. inkwool gives those reactions a home. One that doesn't fade.
The mechanic
inkwool works alongside whatever you already read on. Kindle, Libby, Audible, a physical book. All it needs is a chapter number.
We call it a room, but in bookbinding, the word is gathering: the folded pages sewn together to form a single signature. Here, it's the people you fold in alongside the book. Pick a book, share a code. Friends join instantly. Private, intimate, just your people.
Mark your chapter. Drop a reaction. A gasp, a prediction, a moment of pure disbelief. It anchors to that exact position in the book. Others can like it, reply to it, build on it, but only after they arrive.
Friends' notes appear only when you reach that position. Never before. No spoilers. Just the right words at the right page, or years later, when the words mean even more.
Private. Spoiler-proof. Just the people you choose, around the book you're reading.
Account required during beta. We're keeping it intentional.
Join the community
inkwool is live, and the readers who join now will shape what it becomes. Book clubs, reading groups, solo journalers, friends who share books across time zones. If that's you, drop your email below.
Early readers are acknowledged in the product. You helped build this. That matters to us and it will show.
We're not building in a vacuum. Your experience shapes every decision. Features, design, the whole thing.
Every feature, every new capability. Early readers are first through the door. That doesn't expire.
No more spoilers in the group chat. No more waiting for the monthly meeting. This changes how it feels to share a book.
Drop your email. We'll send a personal invite with your signup code. No spam. Just a room.
Free to use. We'll reach out personally.
You're in.
We'll reach out personally with your invite. Thank you.