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Long books drift.
Yours won’t.

Novarrium keeps every character, place and rule of your book in one Story Bible, and Logic-Locking holds each new chapter to it.

Watch it catch a mistake

Free to start. No credit card.

Koda, drawn in the Appearance Studio: white hair, green eyes, a forest-green hooded cloak
Koda, Appearance Studio

Chapter 19 forgot chapter 3.

Koda has green eyes. You said so once, sixteen chapters ago. Somewhere around the middle of a long book, a draft calls them grey, and the reader who notices stops trusting the rest.

The Consistency Engine reads every new chapter against the Story Bible before you see it.

Pick a line for chapter 19 and see what Logic-Locking does with it.

Held.

Your Story Bible says Koda’s eyes are green, and you wrote it in chapter 3. Logic-Locking patches the line or redrafts the chapter before you ever read it.

Draw a face once.

Pick hair, eyes, outfit and an art style in the Appearance Studio, and the character is drawn on the spot. Every pick is saved to the Story Bible, so every chapter describes them the same way. Want a painted portrait? It is made from those picks, or from how you describe them.

When the story changes someone, the change holds from that chapter on. Rumie’s robes turn grey in chapter twelve; chapters one to eleven keep them scarlet.

Rumie, drawn in the Appearance Studio.
Darahgo, an eight-foot orc-like warrior with green skin, pointed ears, a moss crown and a beast-skull pauldron, glaring out of a misty wood
Darahgo, a painted portrait made from his description.

Your world, by chapter.

When a chapter names a new place, it waits on your map as a suggestion until you add it. Slide to any chapter and every character stands where that chapter left them.

The map, as of chapter 7. Koda is at Harrowmere.
Albrecht Dürer's woodcut map of the southern sky, 1515, in gold line on black
Albrecht Dürer, the southern sky, 1515.

You write. Or it drafts.

  • Every word yours

    Write in the editor. The Consistency Engine checks your chapter against the Story Bible and shows you where it disagrees.

  • A first draft from your outline

    A language model drafts the chapter you planned. Logic-Locking holds it to the Story Bible, and fact errors are fixed or blocked, never handed to you.

  • Bring the book you have

    Paste chapters or upload a .docx or .epub. Every character, rule and open thread goes into the Story Bible.

Bring your draft.

Already started? Upload the book you have. Novarrium reads it and builds the Story Bible from it: every character, rule and open thread you already wrote. The next chapter keeps faith with it.

.txt.md.docx.epub

Your book. Your rights. Your book. Your rights.Author-owned

Your book stays yours.

  • Novarrium claims no ownership of what you upload or create.

  • The text and images drafted for you from your work are yours to edit, publish and sell, to the extent the law allows.

  • Your writing is not used to train models offered to other users.

  • Delete your account and your projects, chapters, characters and world data leave our active systems, normally at once and within 30 days.

Terms and Privacy say it in full.

Build free. Pay to draft.

Characters, maps and the Story Bible you build by hand are free, with 3 portraits. Drafted chapters and generated characters and maps start at $14.99 a month billed annually, or $19.99 month to month.

See every plan

Free to start. No credit card.

Writing every chapter yourself? The Continuity Pass checks each one against your Story Bible.

Questions.

Who owns my book?

You do. Novarrium claims no ownership of what you upload or create, and the text and images drafted for you from it are yours to edit, publish and sell, to the extent the law allows. You are the author and publisher of what you release, so you review it first.

Does it write the book for me?

Only if you ask it to. You can write every word yourself and the Consistency Engine checks each chapter against your Story Bible. Or a language model drafts a chapter from your outline for you to review, and Logic-Locking holds the draft to the Story Bible: fact errors are fixed or blocked before you see them.

Can I bring a book I already started?

Yes. Paste your chapters or upload .txt, .md, .docx or .epub files. Every character, rule and open thread goes into the Story Bible, so the next chapter keeps faith with what you wrote.

What does it cost after the trial?

Characters, maps and the Story Bible you build by hand are free, with 3 portraits. Drafted chapters and generated characters and maps start at $14.99 a month billed annually, or $19.99 month to month. Free to start. No credit card.

Is my writing used to train models?

No. Novarrium does not use your writing, or what is drafted from it, to train models offered to other users. The model providers that draft text process your requests under API terms that state they do not train on API data.