The best way to write your book with an AI
Type @ to summon a character: their sheet opens beside your text, with their arc and every appearance. The storyboard shows all your scenes at a glance. The AI has read the whole manuscript before it answers you, and one switch makes it disappear.
- No credit card
- 50 free AI credits
- Write and export a whole book without paying
In the half-light, made out a figure bent over the workbench, a jeweller's loupe screwed into the right eye. Master had not moved. He stared at the watch the way one studies a corpse.
The hands read 3:33 exactly. Every other clock in — and there were at least four hundred — had stopped on the same figure.
Three promises, and nothing else to remember.
What you want from a writing app: write without anxiety, hold the structure, ship a file as clean as something out of a print shop.
Start anywhere, rearrange everything later
One scene in mind is enough to open a project. Outline, storyboard and chapters are then three views of one text: drag a scene from chapter 12 to chapter 3, numbering follows, cross-references hold. Nothing goes missing, and the day you lose your bearings, the AI has read it all: just ask.
- Write your scenes in whatever order suits you, then rearrange them
- A storyboard showing every scene at a glance
- Grab a scene or a chapter and drop it wherever you like
- One scene at a time, or your whole project in a single editing view
- Type @ to link a character or a place to your text
- Characters, places, objects, arcs, themeseight kinds of sheets, plus the ones you invent
- A map of your world, showing how the pieces connect
- Type / to open the quick commands, including your own
- The Snowflake method, guided one step at a time
An AI that suggests, you decide
It reads your outline, your sheets and the pages already written before answering. Where a generic AI starts from scratch on every prompt, ours keeps the memory of the whole manuscript. It rewrites a passage when you ask for one, and nothing replaces your text until you accept it.
- Someone to talk to who has read your whole manuscript
- The AI writes what comes next, in the direction you point it
- Press Tab and your sentence finishes itself
- Highlight a passage and the AI offers another version
- A demanding editor's opinion, on requestconsistency, pitch pack, show don't tell
- Describe a character in one line and the sheet fills itself in
- Generated images: portraits, places, book covers
- Your back cover blurb, written from your own pages
- A chapter summary, to find your way back in
The text comes out ready to be read
A manuscript is not finished when the last chapter is written: the reread, the layout and the file itself are still ahead. Your versions are kept, your writing tics flagged, your title page set. And the PDF that comes out looks like a book, not like a document printed from a word processor.
- A daily word target, and a bar that fills as you write
- Keep a version before you rewrite everythingcompare two states, roll back whenever you want
- The words you repeat without noticing
- Sentences in the passive voice are pointed out to you
- Who appears, in which chapter, how many times
- Footnotes that number themselves as you write
- Title page, dedication, acknowledgements, back cover blurb
- Citations in APA, MLA and Chicago style
- A publication-quality PDF export
- DOCX for the publisher, EPUB for your beta readers
AI-free mode
One switch, and the AI is gone.
The switch cuts everything that touches a model: no AI button, no suggestion, not a word sent. The studio itself stays whole: structure, storyboard, sheets, exports. Some of you write under integrity rules, others simply don't want it. It's built in, and it costs less.
What about AI watermarks?
Since August 2026, models embed an invisible mark in the text they produce, including the ones we use. Anything you type yourself is never marked, and in this mode nothing reaches a model at all.
What Extypis does, and what it doesn't.
The three writing apps writers most often line up against ours. Prices and features taken from the vendors, including the rows where we lose.
| Extypis | Sudowrite | Novelcrafter | Scrivener | |
|---|---|---|---|---|
| Price | Free, then subscription | $10 to $44 / month | $4 to $20 / month | $59.99, one-off |
| AI included, no API key of your own, no metered top-up | Yes | Yes | Your own key | No AI |
| The AI reads your outline, sheets and finished chapters | Yes | Yes | Yes | No |
| A dedicated plan with no AI at all | Yes | No | Entry tier only | No AI |
| Style checks: repetition, passive voice, readability | Yes | No | No | No |
| Sheets linked to the text by mention | Yes | Manual | Yes | Manual |
| Bibliographic citations (APA, MLA, Chicago) | Yes | No | No | Third-party tool |
| Publication-quality PDF export | Yes | No | No | Yes |
| Writing without a connection | Partial | No | Browser only | Yes |
| You own the software once you've paid | No | No | No | Yes |
Prices checked on 1 August 2026 on the vendors' own sites. Two rows go against us and they stay in the table: Extypis installs like an app and your text stays available offline, but the AI needs a connection; and Scrivener is bought once and yours for good, where we run on a subscription. If owning the software outright matters more than anything else, take Scrivener.
Made for fiction. Built for any structured writing project.
An app to write a book, built primarily for novelists and short fiction writers: narrative outline, character sheets, cross-chapter consistency and an AI that sees your whole project. Equally suited for essayists, academics, poets, screenwriters and bloggers.
Fiction
Narrative outline (Save the Cat, hero's circle, free outline), character, location and conflict sheets linked via @mentions, non-linear writing with storyboard, contextual AI that knows your whole novel.
Academia
Argumentative outline, one-click APA/MLA/Chicago citations, numbered footnotes, integrated bibliographic search, AI that knows your corpus, connector analysis and PDF export via LaTeX.
Poetry
Real-time syllable count (alexandrine, octosyllable, elisions, dieresis), enriched French dictionary, zen mode, repetition detection and inline AI that suggests a line without writing the poem.
Essay
Free argumentative outline, idea and citation sheets linked via @mentions, thematic tags, AI that knows your reasoning, logical connector analysis.
Screenplay
Acts, sequences, movable scenes, characters and conflicts linked to the text via @mentions, contextual AI for dialogue, clean export for stage, agent or registration.
Blogging
Multi-article calendar inside one project, AI that knows your editorial line, scored readability, AI-generated SEO metadata, direct WordPress publishing in one click.
Everything Extypis unlocks for you
Five areas, from the first outline to the file ready to send: everything you ask of a writing app. Here is what each one covers.
Hold your story, from outline to final page.
Narrative tools you won't find elsewhere — turn a tangle of ideas into a structure that holds.
An AI that suggests, you decide
The AI permanently sees your whole project — outline, sheets, scenes already written. Every rewrite, every completion, every suggestion, every cover stays consistent with your entire work, and at no extra cost or setup. You approve every word.
Estimates if you only use this feature. Credits are shared across every AI tool.
Daily writing comfort
Everything that makes long-form writing sustainable: shortcuts, templates, anchored notes, versions, goals.
Analyse and refine your prose
Style tools that go beyond the spell-checker: readability, poetic meter, repetitions, connectors, passive voice.
Ship a book, not a file.
From manuscript to finished book: professional exports, academic citations, direct publishing.
Lifetime updates
Every future Extypis innovation included, no extra cost, no paywall.
Backing an indie project
Extypis is an independent, self-funded project — no ads, no venture capital.
Human support
Got a question? You talk directly to the creator, never a chatbot.
Free to begin.
Free to finish. Paid to go unlimited.
Nothing to install: a site to write, structure and export a whole book without paying a penny. The subscription lifts the limits, opens up everything the app can do, and adds the AI that knows your project.
Four questions, answered plainly.
Will the AI write my text for me?
No. It stays silent while you write and only speaks when you call it. Deep in a chapter you inevitably forget things: a character introduced three scenes earlier, a detail slipped in at the start. It doesn't: it knows your entire project, and it suggests, checks, rewrites, unblocks. You keep final approval, on every word. And you can switch it off completely.
Are my texts used to train an AI?
No. Your texts are never sent to the models for training. None of the providers used by Extypis can access your content outside the single call needed for the generation you asked for, and nothing is retained beyond what running the product requires.
Can I write a whole book for free?
Yes. The writing app is free from start to finish, and no step is reserved for subscribers: you can start a manuscript, write it, structure it and ship it as PDF, DOCX or EPUB without ever reaching for your card. The free plan does come with volume limits: number of projects, sheets per project, AI credits. A subscription lifts those limits and unlocks a finer model once the text gets demanding.
Is Extypis only for novelists?
No. Fiction is the most visible target and the tool excels there. But it serves essayists, academics, poets, screenwriters and bloggers just as well: auto-numbered footnotes, a central bibliographic corpus (APA, MLA, Chicago, IEEE, Harvard, Vancouver), book-quality PDF export via LaTeX, syllabic metrics for poetry. The interface adapts to the type of project.
I built the writing app I always wished I had.
It took me several attempts to finish a novel. The poems just kept piling up over the years, and they are all here, in Extypis. What those failures taught me is that I rarely got stuck for want of ideas. I got stuck because I had lost track of where I was, of what I had already said, and in which chapter. Extypis is what I wish I had had within reach back then.