Honest answers.

Sandrine. is an AI publishing assistant for independent authors on Amazon KDP. She handles everything you hate after writing — editing, interior formatting, cover generation, Amazon keywords, ebook conversion, author website, and launch campaign. All in one place. All in your voice.

Any independent author publishing on Amazon KDP. Especially authors with multiple books, hybrid or multilingual manuscripts, or anyone who struggles with the technical side of publishing after writing. No technical knowledge needed.

No. You can use each tool individually — keywords, cover, formatting — without uploading your full manuscript. But if you do give her your manuscript, she reads it first and everything she does is grounded in your voice.

Most tools apply generic rules to your writing. Sandrine. reads your manuscript before touching anything. She maps your voice, your patterns, your intentional choices — and learns the difference between a mistake and a choice. Everything she suggests comes from how you actually write.

Yes. Sandrine. is available in English and French. More languages are coming.

Yes. Your manuscript is stored securely and never shared with anyone. It is processed automatically, only when you trigger an action. No human reads your manuscript.

Two services may process your manuscript content. Anthropic Claude — for editing, formatting, and structure. Our AI gateway — for book descriptions and keywords. DataForSEO only receives your book title and genre, never your manuscript. No marketing or analytics tools ever see your text.

No. Never. Anthropic's commercial API policy explicitly prohibits using API inputs for model training. We do not build datasets. We do not fine-tune models on your writing. Your work stays yours.

By default, your manuscript is automatically deleted 30 days after your last activity. If you want to keep your project intact in Sandrine., you can activate "Keep my manuscript" in your project settings — it stays until you decide to delete it manually. You can delete your manuscript at any time, instantly and permanently.

Yes — at any time. In your project settings, click "Delete my manuscript now" for immediate and permanent deletion. You can also delete your entire project from the dashboard.

Never. We do not sell, share, or monetize your data in any way.

Before editing anything, Sandrine. reads your manuscript and maps your voice — your rhythms, your intentional choices, your style patterns. She identifies what is a mistake and what is a choice. Every editing suggestion is grounded in how you actually write, not in generic rules.

You start with a 10-minute creative moodboard session — drop images, colors, words that represent your book. Sandrine. acts as art director and generates 3 distinct cover concepts from your vision. Every concept passes a KDP compliance check. You export a print PDF and an ebook cover, both ready to upload.

It converts your interior PDF to a Kindle ebook where every page is preserved exactly as designed. No broken formatting on Kindle. No disappearing white space. Every visual choice survives.

Sandrine. validates 7 keywords against live Amazon autocomplete data and real search volume via DataForSEO. You get keywords that real readers are actually searching for — not guesses.

Sandrine. reads your manuscript and writes 30 launch posts in your voice — not from templates. Platform-specific for Instagram, TikTok, LinkedIn, Facebook, and Newsletter. You get a calendar view, visual direction per post, and you can edit or approve each one.

5 questions. Sandrine. writes your site, derives the design from your cover palette, and publishes it at sandrine.life/your-name. Newsletter capture included.

Sandrine. is completely free during beta. No credit card. No account required.

The paid version will be a one-time fee per book — not a subscription. You pay once per book you publish. Price will be announced before the beta ends.

Yes. Your projects will be transferred to your account when authentication launches with the paid version.

No limit during beta. Publish as many books as you want, for free.

Currently .docx and .txt. PDF import is coming soon.

Interior PDF ready for KDP print upload, Fixed Layout ePub for Kindle, cover print PDF and ebook cover file, author website, and .docx for edited manuscript.

Yes. Sandrine. is fully web-based — it works on any device, any operating system, any browser. No download required.

Yes — fiction, non-fiction, poetry, academic, children's books, hybrid genre, multilingual manuscripts. If Sandrine. works with a trilingual hybrid genre visual poetry book, she works with yours.

Email us at contact@sandrine.life or use the feedback button inside the dashboard. During beta, we respond personally to every message.

Yes — and we want you to. Use the feedback button or email us. The next features are built around real author needs.

An indie author who published on KDP and couldn't find a tool that worked for his books. So he built it.