AI built for authors

Intelligence built into every word you write.

Most writing tools make you switch between apps. Storyloft brings editorial-grade AI into the manuscript itself — a thinking partner that knows your book, your voice, and your goals.

 

Not a content generator. Not a ghostwriter. A craft partner.

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Eddy the Owl, Storyloft's AI Writing Assistant, working on a book.

Works for

  • Memoir
  • Literary Fiction
  • Narrative Non-Fiction
  • Self-Help
  • Thriller
  • Business Books
  • Historical Fiction
  • Biography
  • Essay Collections
  • Romance
Meet your AI Book Writing Partner

Meet Eddy. Eddy doesn't just respond. He understands.

Eddy is Storyloft's AI book writing intelligence — purpose-built for the craft of authorship. It's been shaped around how editors actually think and how authors actually work: with nuance, intellectual rigor, and a deep respect for your creative autonomy.

Whether you're untangling a plot problem or tightening an argument that spans three chapters, Eddy reads your entire book before it responds. It knows your structure, your sources, your voice. Every conversation is grounded in your actual pages — not a blank-slate guess.

  • Manuscript-aware from the start Eddy reads your book before it says a word.
  • Shaped around your voice Suggestions that sound like you, not like a machine.
  • You remain the author Eddy suggests. You decide. Always.
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Eddy is an AI writing assistant for authors.
What Eddy can do

Every AI tool an author needs in one app.

From brainstorming to structural edits to source research, Eddy works inside your manuscript — not in a separate tab.

Conversational craft coaching

Ask for critique, help developing an argument, brainstorming continuations, or structural analysis — in plain language. Eddy responds with editorial depth, not generic feedback.

Edits land directly on the page

When a rewrite or passage is worth keeping, Eddy puts it right into your manuscript. No copy-pasting, no reformatting. One confirmation and it's there.

Saved research, always searchable

Every source Eddy finds can be stored against your manuscript. Ask later — "what was that study on sleep and memory?" — and it finds it by meaning, not by keyword.

Web research without leaving

Ask Eddy to research a historical period, verify a claim, or explore a topic. It searches the web, reads the source, and returns a clean summary — with your citations saved.

Insights panel

Eddy tracks what it notices about your book over time — recurring themes, structural patterns, strengths, and blind spots. Your Insights tab is a running record of what the AI has observed.

Voice dictation

Think out loud. Eddy transcribes your spoken words into manuscript-ready text so your ideas don't get lost between thought and keyboard.

✦ Author voice profile

AI that writes like you, not like an AI.

The biggest concern authors have about AI is sounding generic. Storyloft solves this by learning your actual voice — your cadence, sentence rhythm, the way you build an argument or pace a scene — directly from your own writing.

 

Share a few pages of your prose. Eddy extracts a voice profile and uses it to shape every suggestion going forward. Whether you're a memoirist with a confessional intimacy or a journalist with a precise, declarative style, the result sounds like a stronger version of you.

  • Share a sample of your writing A few hundred words is enough to get started
  • Eddy builds your voice profile It extracts your style, tone, rhythm, and thematic markers
  • Every suggestion sounds like you The profile steers rewrites, continuations, and feedback
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Storyloft creates an author profile based on your writing style. AI uses it to write in your voice.

"I don't want AI writing my book."

We hear this — and we agree. Storyloft was built by people who believe the same thing. Eddy isn't here to write your book. It's here to make the hardest parts of writing easier, so the parts only you can do get the attention they deserve.

"What if it replaces my creative voice?"

Eddy is trained to serve your voice, not substitute for it. Its voice profile system is built around preserving what makes your writing yours — not flattening it into AI-prose.

"I'm a non-fiction writer. I need accuracy, not creativity."

Eddy takes non-fiction seriously. It can verify claims, pull sources, track your argument structure, and flag where your reasoning needs more support — not just where your prose needs polish.

"AI feedback feels generic."

Because most AI hasn't read your book. Eddy has. It responds to your actual manuscript — your specific chapters, arguments, and structure — not a generic writing prompt.

"Won't it just tell me what I want to hear?"

Eddy is designed to give honest editorial feedback — the kind a developmental editor would give, not a yes-machine. It's built to push back constructively.

The best book writing apps get out of the way. Eddy is there when the page is blank, when the argument is stuck, when the chapter won't close — and invisible the rest of the time.
✦ Built differently

An AI experience purpose-built for the craft of authorship.

Storyloft doesn't drop a general-purpose chatbot into a book writing app. Eddy is shaped by editorial thinking — how developmental editors give feedback, how authors structure narrative and argument, how voice and genre interact. Every response is informed by your manuscript, your voice profile, and what you're trying to accomplish.

  • Your manuscript is always in context Eddy retrieves relevant passages before every response, not after.
  • Editorial framing, not content marketing framing Eddy thinks in terms of structure, argument, and reader experience
  • Genre and format awareness Feedback adapts to memoir differently than it does to thriller, business book, or narrative non-fiction
  • Your writing stays yours Storyloft never trains on your manuscript or uses it to improve models
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6+

AI-powered book editing tools built directly into the editor

1

Platform. No app switching required.

Manuscript context retained per writing session.

Zero

Training done on your writing. It's yours.

Works at every stage of your book.

  • First draft ideas, structure, momentum
  • Revision developmental feedback, argument and scene analysis
  • Line editing prose rhythm, clarity, voice consistency
  • Publishing back cover copy, metadata, marketing

Frequently Asked Questions

What is Eddy, and how is it different from ChatGPT?

Eddy is Storyloft's AI writing partner — but unlike ChatGPT or general-purpose AI tools, it's been designed specifically around how authors work. The most important difference is context: Eddy reads your actual manuscript before responding. It knows your chapter structure, your arguments, your characters, your sources. It gives feedback grounded in your pages, not generic writing advice. It also learns your voice, persists insights across sessions, and can apply edits directly to your manuscript — none of which a standalone chatbot does.

Does Storyloft work for non-fiction writers?

Absolutely — and it's one of the things Eddy does especially well. Non-fiction writing has its own craft challenges: maintaining argument coherence across long manuscripts, keeping research organized, verifying claims, and sustaining a consistent authorial voice across hundreds of pages. Eddy understands all of these. It can track your argument structure, pull relevant research when you need it, flag logical gaps, and help you find transitions that serve the reader without losing your voice. Storyloft supports memoir, narrative non-fiction, business books, self-help, history, biography, essay collections, and more.

How does Eddy help with research-heavy non-fiction?

Eddy can search the web on your behalf, read source pages, and return summaries with citations — all without you leaving the manuscript. Those sources are then stored and searchable: if you saved a study six weeks ago, you can ask Eddy "what was that piece about attention and digital media?" and it finds it semantically. It also stores your sources against the relevant chapters so your research stays organized as the book grows. Think of it as a research assistant who actually reads the sources and keeps track of what matters.

Can Eddy help me maintain a consistent argument across a long manuscript?

This is one of Eddy's core strengths for non-fiction. Because it retrieves context from your full manuscript before responding, it can spot when a claim in Chapter 7 contradicts a position you took in Chapter 3, or when an argument you're building doesn't yet have the evidential support to land. It holds the shape of your book in mind in a way that's very difficult to do yourself when you're deep inside a single chapter.

Does Storyloft train its AI on my writing?

No. Your manuscript is never used to train AI models — not Storyloft's systems and not the underlying model providers. Your writing is processed to generate responses in your session, and that's it. We designed Storyloft on the premise that an author's unpublished work is sacred. You retain full ownership of everything you write inside the platform.

Is it safe to put an unpublished manuscript into Storyloft?

Yes. Your manuscript is stored securely, accessible only to you, and never shared with third parties for training or advertising purposes. Storyloft's infrastructure is built with author confidentiality in mind — the same expectation you'd have with any professional editorial relationship. Your unpublished work stays unpublished until you choose otherwise.

Can Eddy handle book-length manuscripts (80,000–100,000+ words)?

Yes. Storyloft is built specifically for long-form work. Rather than sending your entire manuscript into every conversation (which would be slow and expensive), Eddy uses a retrieval system that pulls the most relevant passages from your book based on what you're asking about. This means it can work with books of any length while keeping responses fast and grounded in what actually matters for your current question.

Is using AI writing software considered ghostwriting?

No — and the distinction matters. A ghostwriter writes your book. Eddy helps you write it better. Every word that ends up in your manuscript is there because you put it there or approved it. Eddy's role is closer to that of a developmental editor or research assistant: it asks the questions, flags the problems, offers alternatives, and does the legwork — but the authorship is entirely yours. Using Storyloft is no different, ethically, than using spell-check, a thesaurus, or hiring a professional editor.

How does Storyloft compare to Scrivener?

Scrivener is a powerful organizational tool with a long track record — many authors love it for managing large projects. Storyloft does what Scrivener does, and adds the AI layer Scrivener doesn't have. If your main frustration with Scrivener is that it helps you organize your work but doesn't help you improve it, Storyloft was built to solve exactly that. If you're already deep in a Scrivener project, Storyloft supports import so you can bring your existing work in.

How does the author voice profile actually work?

When you share a sample of your writing, Eddy analyzes it and builds a structured profile — capturing things like your sentence rhythm, typical paragraph length, the kind of imagery or language you reach for, your tone, and your genre conventions. This profile is then injected into every Eddy session so that rewrites, continuations, and suggestions are filtered through your style rather than a generic one. The profile updates automatically as you write more, so it gets more accurate over time.

What writing genres and formats does Storyloft support?

Storyloft is built for any long-form authored work. This includes literary fiction, commercial fiction, thriller, romance, historical fiction, science fiction, fantasy, memoir, narrative non-fiction, biography, self-help, business books, essay collections, and more. Eddy's feedback adapts to the conventions and expectations of your genre — it understands that a thriller chapter needs to end differently than a memoir chapter, and that a business book argument is structured differently than a personal essay.