undercoverHow it works

Coming soon to iPhone and Android

see what’s under the cover.

Undercover tells you what’s in a book before you read it: violence, sexual content, language and more, each with a level from None to Strong.

Get an email when Undercover is ready to download.

Your phone (optional)

We'll only use your email to tell you when Undercover is out. We won't share it.

How it works

What Undercover shows you about a book

Look up

Look up any book

Search by title, author, or ISBN, or scan the cover or barcode with your camera. You don’t need an account to look up a book.

What’s inside

A level for each kind of content

Each report covers categories such as Violence, Sexual content, Language, and Drugs & alcohol. Every category gets a level and a short, plain description of what happens in the book.

Reading profiles

Limits for each reader

Make a reading profile for yourself or for anyone you choose books for, and set a limit for each topic, such as kissing or strong swearing. Every book then shows whether it fits those limits. Reading profiles are private to your account.

Reviewers

Checked by people who read the book

Reports are written first by AI. Readers who have read the book then review each category: they confirm it, or say the content is stronger or milder, and the report changes to match.

Undercover describes what’s in a book. You decide what to read.

The app is coming to iPhone and Android.

Get an email when Undercover is ready to download.

Your phone (optional)

We'll only use your email to tell you when Undercover is out. We won't share it.