Your companion writes you a note about every book
Picks books from your shelf you're ready for
Daily picks that actually get you
A 3.8-star book changed your life. A 4.5-star book you already forgot.
We care that the next one matters. Recommendations shaped by your taste, not by what's trending. Not an algorithm. A companion.
A reading partner that knows every book you've ever loved, and tells you exactly why the next one will land. Every recommendation comes with a reason that proves it.
A cozy romance and a devastating literary epic both get 4.1. One made you smile. One broke you open. Your shelf shouldn't treat them the same.
Loved. Liked. Couldn't finish. That's how you actually talk about books.
Browse by how you want to feel. Heartbreaking. Strange & Unsettling. Quietly Devastating. Tap a mood, find books that match, ask your companion to pick the right one for you.
A place that knows what moves you. Scan your physical bookshelf with your camera. Import from Goodreads. Build custom shelves. No reading goals, no page-count dashboards, no guilt notifications.
Full author pages with complete bibliographies, series order, and your companion's take on where to begin. No more Googling "what order to read Ursula Le Guin."
CLI and MCP server included. Your AI agent can search your shelf, pull recommendations, and talk to your reading companion.
> spine search "something dark and short"
The Road by Cormac McCarthy
We Have Always Lived in the Castle
> spine ask "the dispossessed"
This will surprise you because it sounds
political, but what it actually is is a
portrait of a man who is an outsider on
every world he ever stands on...The best book you'll read this year might take you three months. You might reread something instead of starting something new. You might go weeks without reading. None of that means you're failing.
Spine exists for people who care about what they read, not how much.
Beta now open on iOS