My own tool said a machine wrote my essay. I wrote that essay.

Writing the book

• Chapters and scenes in a binder. Move the book by its parts instead of scrolling one 90,000-word file hunting for chapter 12.
• Autosave and checkpoints. Bank one before a big revision and roll back if it goes wrong.
• Focus mode. Everything except the sentence you're on gets out of the way.
• Find and replace across the manuscript, checkpointed first, so a bad replace is one click to undo.
• Read-aloud on the desktop app, to catch the sentence your eye kept skipping.

Planning and the story bible

• 42 book shapes, 26 story structures, 66 planning sheets. They build real chapters and empty scenes, with the guidance in notes that never export.
• The Codex. Characters, places and lore, matched to every scene that mentions them.
• @mentions. Type a name, link it to its entry, keep writing.
• Motif check. Tells your vocabulary from a tic bunched into two scenes.

The Judge

• A manuscript report that needs no internet and no AI. Rhythm, adverbs, passive voice, sticky sentences, heat-mapped in the editor.
• Measured against you, not everybody. Feed it your finished work and it draws the line where your range ends.
• No invented numbers. No readiness score, no grade. Counts and lenses; the verdict stays yours.

AI, only when you ask

• Anthropic, Gemini, any OpenAI-compatible service, Ollama or LM Studio, a command-line AI, or nothing at all.
• Your keys are never stored. It reads the key from an environment variable at the moment of the call.
• No ghost text. Rewrite, Continue, Brainstorm, Summarise: every request is one you asked for.
• A seven-reader bench. They report. There's no accept button.
• Analytical-only mode. The app reads your book and refuses to write a word of it.

Getting work in and out

• Import .docx, .epub, web articles, Markdown and plain text as real chapters and scenes, headings and tables intact.
• EPUB that passes EPUBCheck with your cover and your scene-break ornament.
• DOCX in standard manuscript format for agents and editors.
• Print PDF at KDP trim sizes, binding margin on the correct side of every page.
• Boxsets and advance reader copies, each ARC stamped with the reviewer's name.

Your work stays yours

• No account, no sign-in, no sync. Nothing to be locked out of.
• Backups in one file you can restore in any version of the app.
• Readable without me. Your manuscripts sit in SQLite that any SQLite tool opens.
• Report a problem from inside the app, never with a word of your writing in it.

Selling the book

• Reads your KDP sales and page-read reports and shows you what's earning.
• Amazon Ads reports, read for the keywords eating money and selling nothing.
• Keyword and category research for the seven keyword boxes KDP hands you.
• A launch and release planner.

Reading the market

• The genres drowning in junk, and where the open ground is.
• It reports what it finds and leaves gaming the store to the hustle crowd.

The writing room

• A chat pane on your own AI, paid or local, with saved sessions per book.
• It reads the chapters you attach, the Codex and your numbers, talks the book over with you, and won't play your characters. Nothing lands in the manuscript until you've accepted the edit yourself.
• The method I write with: the interview before a draft, the editing passes, the reader bench, the voice check. As plain files you can rewrite.

Any computer

One HTML file

Double-click it and write, offline, nothing installed, in Chrome or a Chromium browser like Edge or Brave. Holds about 5 MB: a novel's worth of text, not a shelf of them.

Linux

The desktop app

Unpack, double-click. Everything, including print PDF and read-aloud, plus the complete source.

Anywhere you sign in

onewriter.nicheof.one

The same app, already served. Sign in with the email you bought with.