Interior, cover, ebook, website, campaign — from a single file.
Reads before it writes · Built by an author · Free during beta
A page from a real manuscript
Sandrine reads. Then she annotates in the margin — like an editor would. She never rewrites without telling you why.
she walked into the room without knocking. the lamp was still on.
between the silence and the door, something — a held breath, maybe — refused to leave.
elle ne dit rien. she didn't need to.
Three sentences. Three annotations. No changes without explanation.
L.1
Lowercase opening — kept. Marked as intentional.
L.2
Em-dash + fragment — your rhythm. Protected.
L.3
Code-switch FR↔EN — flagged as voice, never as error.
Before she touches a word
How it works
You drop your manuscript
She reads it and identifies its structure.
You set your intent
Genre, cover, launch.
She builds the book
Interior, cover, ebook, campaign — files ready to use. Author website prepared by Sandrine and delivered within 72h after your review.
The files are ready to use.
The six tools
✦ Editing & voice
The editing works like Grammarly, except Sandrine. reads your book first — to respect your style, your patterns, your intentional choices. Four editing levels, from maximum voice preservation to full structural review.
✦ KDP layout
Sandrine. identifies your book genre — novel, poetry, academic — and formats your interior using the same engine as Oxford University Press (yes, really). Applying the exact typographic rules of that genre: first-line indent for fiction, flush left for poetry, block spacing for essays, and more.
CHAPTER ONE
The morning was the kind that makes you forget there was ever a night before it.
She walked the long way around - past the bakery, the empty bench, the church that no one entered anymore.
And she carried the letter, unopened, in her left hand…
✦ KDP keywords
Sandrine. is built with a search engine designed specifically for the Amazon KDP market. She analyzes your manuscript's themes and language, then identifies the 7 keywords and 2 low-competition BISAC categories that will help your readers find you — based on what they actually search for, not on your genre. Available for €19 or included in Complete.
✦ Cover
Sandrine. runs a 10-minute moodboard session — your references, your colors, your mood — then generates 3 distinct concepts built from your vision, not from a stock library. Or skip the session, let her suggest 3 directions from your manuscript, and get them KDP-ready.

The Object
A key element of your world.

The Atmosphere
Your book's emotion, translated into image.

The Genre Subverted
A design that runs against expectations.
One familiar. One emotional. One that breaks your genre's rules.
✦ Author site
Sandrine. reads your manuscript, analyzes your cover palette and mood, and writes your bio, synopsis and one-liner in your voice. The site is then reviewed and refined by an editor before delivery to ensure a professional result that truly reflects your vision, and belongs to you — validated within 72 hours.
A. Lavoie
sandrine.life/site/lavoie
✦ Launch campaign
Sandrine. identifies your reader profile, then pulls lines from your actual manuscript to write 30 launch posts in your voice. Platform-specific. Calendar-ready. Because she read your book.
The alternative
The usual way
$89/month
+ $347 one-time
+ 9 accounts
+ hours of setup
Sandrine▢
Everything in one place.
One account.
Already optimized for KDP.
All future features. All updates. No extra cost. Ever.
9 subscriptions. Hours of work. Or €97 and one afternoon.
Pricing & Royalties
Most authors underprice their books without knowing it.
$9.99 sounds reasonable.
After printing costs, you earn $1.20 per sale.
Sandrine calculates your real printing cost, shows your royalty at every price point, and recommends the price that makes your book financially sustainable.
Real numbers. Calculated from your actual page count and paper type. Before you publish.
You have a manuscript and you want a published book — but between the two: editing, formatting, cover, keywords, campaign, author site.
Sandrine. takes care of all six — one file, one afternoon.
FAQ
For editing and formatting, yes. For the cover and website, you can start with just your title and a description.
.docx, .txt, .md, or paste directly. No special formatting required.
No. She detects your intentional choices before touching anything. Fragments, lowercase, unusual punctuation - if it's consistent in your manuscript, Sandrine protects it.
Your manuscript is deleted after 30 days. Sandrine never trains on your writing. No account required to start.
English and French fully. Multilingual manuscripts supported.
An indie author who published on KDP and couldn't find a tool that worked for his books. So he built it.
Free until May 15. After that: Complete €97 per book, Lifetime €179 once (launch price ends May 31), Studio €499 once. Standalone author website €150. No subscription. No monthly bill.
Cover. Interior. Ebook. Website. Campaign.
All from one manuscript upload.