AuthorKit
Book writing software

Write your book.
Or let CoAuthor write with you.

One manuscript desk. You type — or open CoAuthor for this book (story bible, Accept-only edits). Instant Ebook Auto when you want idea → file.

See the editor

Start free · no card · manuscript yours · 19,000+ authors

The Quiet Harbour

Folders aren’t a book.

Docs tabs, Scrivener binders, and AI that rewrites without asking cost you years. Typewriter is one desk — and nothing lands until you Accept.

On the desk

Two ways. Same book.

Write yourself, or let CoAuthor help. Auto when you want the full run. Export when you’re done.

You

Paper desk. Your chapters.

Binder, outline, and the page. Close CoAuthor and it’s a plain book editor.

  • Chapters and scenes in one tree
  • Outline that is the book
  • Snapshots before a big rewrite

The Harbor Letters · Binder

09Platform2,140
10The letter1,890
11Coat pocket940
12Harbor station1,248
13Fog over the pier—
Chapter 12 · Harbor station

Harbor station

The clerk turned the ledger toward her. Jonah’s name was there, in his own slanted hand, under the date she had stopped counting from.

Mira read it twice. The ink had run where the rain had found the page, but the last ferry, 21:40 was clear.

Target1,248 / 2,500
Snapshot savedBefore the rewrite · 09:12

Where it sells

One file. Every shelf you already use.

Export EPUB, HTML, or Markdown. Upload to Amazon, Kobo, Gumroad, your site, or social — you keep the checkout and the rights.

  • Amazon
  • Kobo
  • Gumroad
  • Your site
  • Instagram
  • TikTok
  • Facebook

No store cut from us. You upload. You keep the rights.

How it works

One desk. From first page to file.

  1. 01

    Open a manuscript

    Name the book or start blank. Chapters, outline, and bible live in one place.

  2. 02

    Write your way

    Type alone, open CoAuthor for Accept-only help, or run Instant Ebook Auto when you want the full pass.

  3. 03

    Export and keep it

    Publish checks, then EPUB, HTML, or Markdown. The manuscript stays yours.

Pricing

Start free. Unlock the full desk when you need it.

Shelf free. Full desk $2.99/mo · $24.99/yr · $69.99 once. CoAuthor is wallet or your own ChatGPT / Claude / Grok.

  • Free
    Start on the shelf. No card.

    $0

    • · Browse and start a manuscript
    • · Paper editor · outline · chapters
    • · Read story bible and map (edits need paid)
    • · No card to try the desk
  • Full desk
    Book Author
    Full desk. Bible, map, export.

    $2.99/mo

    • · Everything in Free
    • · Instant Ebook · story bible · relationship map
    • · Writing analytics · streaks · words you wrote vs Chief
    • · Snapshots, publish checks, format + export
    • · Community share · Cover Designer handoff
    • · Life: own the desk forever

    CoAuthor pool / BYO → full pricing · bring your AI

Straight answers

Open the manuscript.

Write it yourself, or bring CoAuthor in. Same desk either way.

Editor · Pricing