Private alpha

Will you like this book?

Nook learns your taste, then predicts how much you — specifically — will enjoy any book. Point your camera at the cover, or type the title.

Create your account See it work

How it works

1
Tell it your taste
Pick the genres you love, the moods you're after, and the things you can't stand. Takes about two minutes.
2
Add a book
Photograph the cover in a shop, or type the title. Nook works out which book you mean.
3
Get a score that's yours
A prediction out of 5, broken down across eight things that decide whether you'll like it — and the reasoning behind each.

Rate books as you finish them, and the predictions get sharper.

Same book, three readers

This is the whole idea. One book, and it is a different recommendation depending on who's asking.

Loves sci-fi and adventure · big, epic, funny · avoids romance

Project Hail Mary

by Andy Weir

★★★★½4.67/5Excellent Match

Squarely in your lane: a problem-solving space story with a warm streak of humour and no romance subplot to sit through.

Genre Match: 4.9
Theme Match: 4.6
Writing Style Match: 4.4
Pacing Match: 4.7
Character Appeal: 4.8
Length & Commitment: 4.2
Similarity to Past Favourites: 4.5
Avoidance of Dislikes: 5.0

A worked example, not a live prediction — real ones are written for your profile once you're in.

Your data, plainly

What's stored: Your email, the books and ratings you add, and basic usage events — which screens get opened, which buttons get pressed — so I can tell what's confusing people.
Who can see it: Your library is locked to your account in the database; nobody else signed in can read it. I can see the usage events, because working out what to fix is what they're for.
What your email is used for: Confirming your account and resetting your password. There is no newsletter and no marketing to opt out of.

Fair questions

Why does the address say vercel.app?+

Vercel is the free hosting Nook runs on while it's an alpha. It's the same service a lot of small projects launch on, and a proper domain costs money I'd rather not spend until Nook has earned it.

Is my reading data used to train an AI?+

Each prediction sends the book's title and a summary of your taste to OpenAI's API, which is what writes the score. Data sent through their API isn't used to train their models by default. Your library itself stays in Nook's own database.

What happens to the photo I take of a cover?+

It's sent once, to identify the book, and never saved. What gets stored is the title, the author, and the score — not your picture.

Will it stay free?+

Free for the whole alpha. If it ever costs anything, testers will hear it from me first — and nothing can charge you in the meantime, because there's no payment system built yet.

How accurate is it, really?+

Usually predictions are less than 0.5 stars off. But don't take our word for it — try it yourself.

Ready to try it?

Two minutes of setup and your first prediction.

Create your account I already have one

How it works

Tell it your taste

Pick the genres you love, the moods you're after, and the things you can't stand. Takes about two minutes.

Add a book

Photograph the cover in a shop, or type the title. Nook works out which book you mean.

Get a score that's yours

A prediction out of 5, broken down across eight things that decide whether you'll like it — and the reasoning behind each.

Rate books as you finish them, and the predictions get sharper.

Your data, plainly

What's stored

Your email, the books and ratings you add, and basic usage events — which screens get opened, which buttons get pressed — so I can tell what's confusing people.

Who can see it

Your library is locked to your account in the database; nobody else signed in can read it. I can see the usage events, because working out what to fix is what they're for.

What your email is used for

Confirming your account and resetting your password. There is no newsletter and no marketing to opt out of.