AI detectors are unreliable in both directions and prove nothing. This does something narrower and more useful: it maps your own manuscript, showing where your voice is strongest and where the prose has flattened out — which is a writing problem before it is a disclosure one.

Tool

How much of this is genuinely your own words

What it does, precisely

  • Measures how much of your manuscript is your own words against what was suggested
  • Reports it passage by passage, not as a single unhelpful percentage
  • Uses your Exact Text as the baseline — what you actually said or typed
  • Gives you something concrete to answer a disclosure question with
Free. No card. Private.

Free opening chapter review — on your own pages

Paste or upload up to 5,000 words. You get back what the opening appears to promise, what is already working, where a reader may hesitate, and the three priorities worth fixing first. Free, private, no card.

By signing up, you agree to receive useful writing tips and occasional Your Book Pro offers by email. You can unsubscribe at any time. We will never sell your details or share them with third parties for their own marketing.

Your private link goes to your email. It's yours to keep and return to.

Or see how it works first

This is an AI-assisted snapshot, not a human edit. You decide what belongs in the next draft.

What it does

This is the tool that exists because the product is built the opposite way round from most: your words are stored verbatim as the source of truth, every suggestion is advisory, and nothing is applied without an explicit accept. That single rule is what makes the measurement possible at all. A tool that rewrites your text as it goes cannot tell you afterwards what was yours.

However you write

Measures the manuscript in your account. If you uploaded a draft written elsewhere, it can only measure what has happened since — it reports on the work done here, and says so.

The mistake: not being able to answer the question

Every author using any modern tool now faces a question they cannot currently answer: how much of this is actually mine. Platforms are asking for disclosure. Reviewers are suspicious. Competitions and publishers are writing policies. And most writing tools are built in a way that makes the line impossible to see, because they rewrite as they go and keep no record of what was there before.

Being able to answer honestly is becoming a practical requirement, not a philosophical one.

What Your Book Pro does here

Your Book Pro is a writing studio for people making a real book. You bring the words — typed straight in, dictated if you'd rather talk, or uploaded from whatever you have already written elsewhere — and it does the work that normally costs thousands: structure, editorial feedback, proofreading, a cover, and a publisher-ready export.

One rule shapes all of it. Your words are stored as Exact Text and are never overwritten. Every suggestion arrives attached to a place in your manuscript, and nothing changes until you accept it. Where most AI tools quietly rewrite you into their own register, this one shows you the change and waits. Even the automatic clean-up pass is held to a length check — if it drifts too far from what you actually wrote, the edit is thrown away and you keep your own words. The editorial standards behind the feedback are our own, written for books and specific to your genre, not a general chatbot answering in a good mood.

The Footprint Checker exists because Your Book Pro is built the opposite way round: your words are stored verbatim as the source of truth, every suggestion is advisory, and nothing is applied without an explicit accept. That single rule is what makes the measurement possible at all — a tool that rewrites your text as it goes cannot tell you afterwards what was yours.

This measures your footprint within Your Book Pro, and it is not an AI detector in the sense platforms mean.

Where it stops

This measures your footprint within Your Book Pro. It cannot see what you drafted somewhere else and pasted in, and it is not an AI detector in the sense platforms use — those are unreliable and we will not pretend otherwise.

Where to find it

The AI Footprint scan runs in the Editing Suite on the Edit tab and saves its result to the book. Ask the Editor — the pill in the top right — can quote that saved report back to you while you work.

What this replaces

What you are buyingTypical rangeNotes
Nothing. No human service does this job.

Check my manuscript

Review my opening