Start anywhere
An idea, a manuscript from Word or Markdown, or a blank page. Pick a way in; you can mix them later.
DESKTOP APP FOR AUTHORSFOR MAC
idea in.
book out.
Give Author Magic an idea and it pitches the book, outlines it, and writes a first draft while you watch the pages typeset. Or write every word yourself. Either way it keeps your story straight, designs the cover, and builds the files KDP asks for, checked.
Download it freemacOS · Apple Silicon · 1.0
6
AI services built in, plus any OpenAI-compatible one
14
book typefaces, open-licensed and embedded
17
KDP paperback trim sizes, from 5 × 8 in to A4
0
errors from epubcheck 5.2.1 on the ebook
WORKS WITH THE AI YOU ALREADY USE
ClaudeAnthropic
OpenAIGPT models and images
GeminiGoogle
OpenRouterhundreds of models, one key
Ollamafree, on your Mac
LM Studiofree, on your Mac
And any OpenAI-compatible service, like
DeepSeek
Mistral
Groq
Names and logos belong to their owners. Author Magic works with these services through your own account; it isn't affiliated with or endorsed by them.
HOW IT WORKS
from idea to kdp.
One app, one book. Everything you'd otherwise stitch together from a chatbot, a word processor, a series-bible spreadsheet, a cover tool and a formatter.
Write your way
Let the AI draft the whole book, expand your paragraphs, or only check your work. Review every change before it lands.
Keep it straight
The story bible tracks characters, places, the timeline and who knows what by chapter, and flags contradictions.
Cover and publish
Design the cover in the studio, then build the interior, cover wrap, ebook cover and EPUB, each checked against KDP's rules.
WRITE IT WITH AI
from an idea to a first draft.
Say what the book is about, choose its shape, approve the pitch, and watch it write itself, chapter by chapter. It's a first draft: every word is yours to change.
Idea and shape
Type a sentence, tap a spark, or let it surprise you. Pick genre, point of view, tone and length; the little book restyles itself as you choose.
The pitch
Three titles, the cast, the places, a chapter-by-chapter outline and the first page. Change anything before a word is written. A small estimate shows what the draft should cost.
Watch it write
Chapters stream in and tick off. The story bible fills in, the pages typeset themselves, and notes flag anything worth a look. Pause, stop, or keep working elsewhere.
Your book exists
Words, pages, chapters, done. Then read it and make it yours, check the continuity, make the cover and build the KDP files.
Watch it typeset itself
Switch to Pages while it writes and the interior is laid out after every chapter, with a real page count, not a guess.
It speaks up
After each chapter it checks continuity and pacing and tells you only what matters, quoting the words so you can find them.
Undo the whole run
Your manuscript is saved before it starts. Stop at any time, write just chapter one first, or undo the lot in one step.
THE AUTHORSHIP DIAL
you decide how much the ai writes.
Some authors want a proofreader with a memory. Some want a co-writer. Some want a first draft from a brief. All of them are real ways to make a book, and you can set the dial per chapter.
Review it paragraph by paragraph
Every AI change opens beside your text. Keep the new version, keep yours, edit it, or ask for another try with a note. Nothing enters the book until you apply it.
Nothing is lost
A copy of the chapter is saved before every AI change. Undo the last one, or restore any earlier version from History.
It knows your book
Every request carries your brief, your outline, your voice and the story bible, so a drafted scene knows who has met whom.
KDP's AI questions, answered
KDP asks whether your text and images are AI-generated. The app knows which chapters the AI drafted, so the answers are filled in from your dial.
STORY BIBLE
it remembers who knows what.
Characters, places, facts and the timeline build up as you write. Then it reads the manuscript back and tells you where the story contradicts itself.
CONTINUITY FLAGS · THE LANTERN KEEPERS
ContradictionLow Water
Wren's green eyes
Wren's eyes are grey in The Last Entry.
KnowledgeThe Weather Book
Crane had already told her about the second mate
Wren only learns this in A Stranger at the Door, two chapters later.
TimelineNortherly
the Tuesday ferry
Crane arrived on the Thursday ferry the same week.
ANY AI YOU USE
your ai. your keys.
Connect Claude, OpenAI, Gemini or OpenRouter with your own key, or run a free model on your Mac. Connect several and pick the model for each job.
Paste a key, done
The key is checked the moment you paste it, and kept in your Mac's Keychain. Say hello to see a real reply come back.
A model for each job
Drafting, checks, cover art and private books can each use a different model. Sensible defaults are picked for you; change any of them.
Costs, shown small
A small estimate sits beside each AI action. Your provider bills you at its own rates, on your key; set a monthly limit or hide costs altogether.
Private books stay on your Mac
Mark a book private and its text only goes to a model running on your computer, through Ollama or LM Studio.
COVERS AND TYPESETTING
every book looks like itself.
Start from a design, then open the studio: every title, shape, pattern and picture is a layer you can drag, resize, rotate and recolour on the real KDP wrap. The spine lands on the spine.
Sample books made in Author Magic. The titles and authors are fictional.
- Layers
- text, shapes, icons, ornaments, images
- Patterns
- made from your title · vector
- AI cover art
- 4 options from any image model
- Snapping
- centre · spine · safe area
- Spine width
- from page count and paper
- Checks
- safe area · barcode · 300 DPI
- Interior type
- 14 faces · size · leading
THE KDP PACK
upload these four files.
One button builds everything KDP asks for, checks it, and puts it in one folder, numbered in the order you'll upload it.
Ready for KDP44 pp · 5.5 × 8.5 in · cream
1Interior.pdffonts embedded · even pages
2Cover (paperback wrap).pdfspine from page count
3Ebook cover.jpg1600 × 2560 px
4Ebook.epubepubcheck · 0 errors
+KDP metadata.mdblurb · keywords · AI answers
Before it says Ready, it checks trim size, page count, the gutter for that page count, and embedded fonts. If something's wrong, it tells you what and how to fix it.
YOURS, ON YOUR COMPUTER
your book never lives on our servers.
We don't have servers for your writing. Author Magic is a desktop app, and your books are ordinary folders you can open without us.
Your folder
You choose where your books live. Each one is a folder with your manuscript in plain Markdown, the story bible and the built files.
Your keys
AI runs on your own account with the service you choose, billed by them. There's no Author Magic subscription.
Your pen names
Author profiles hold the name, bios, photo and writing voice for you and each pen name. Pick one when you start a book.
Offline by default
Writing, the bible, covers and building files all work offline. Text goes out only when you ask the AI for something.
PRICING
free to start. one price to finish.
$149
one-timeNo subscription
FOUNDING PRICE$99 for founding authors
Every book, start to finish
The AI writes the rest of each book
Unlimited AI edits
The clean KDP pack and EPUB
Any AI service, on your own keys
Mac app for Apple Silicon
Every 1.x update
Refund within 7 days if it won't work
Try the free version first: it has no time limit. Refund policy
JUST ONE BOOK$49 for a single book
Finish and publish one book: the rest of its AI writing and its KDP pack. It counts toward the full licence for 60 days, so upgrading costs $100.
Free, with no time limit
The idea, the pitch and chapter 1 of every book, written by the AI, plus about 3,000 words of AI edits in each book. Every editing, story bible and cover tool. Sample PDFs to print and hold, stamped SAMPLE. Buy when you want the rest.
What AI costs
Your AI provider bills you for what you use, at its own rates, on your key. Author Magic doesn't charge for AI or mark it up. A whole first draft usually costs a few dollars, and models on your Mac are free.
Your words stay yours
Your manuscript is always a plain file in your folder, licensed or not. If you ever stop using Author Magic, your books and built files stay where they are.
QUESTIONS
asked often.
Author Magic: Write & Publish
macOS · Apple Silicon · 1.0Free with no time limit. Take the pitch and chapter 1 all the way to a sample proof before you decide.
Download it freeCan it really write the whole book?
It writes a complete first draft from your idea and the pitch you approve, chapter by chapter, in the background. Then it's yours to read, change and finish. You can also write every word yourself.
I've never self-published. Is it for me?
Yes. A walkthrough runs the first time you open it, and the Guide in the Help menu covers every step to upload.
I've already written my book. Can I bring it in?
Yes: a Word file (.docx), Markdown or plain text. Headings become chapters.
Do I need to be online?
Only for AI features (unless you use a model on your Mac), and once to activate your licence. Everything else works offline.
What's free?
The idea, the pitch and chapter 1 of every book, written by the AI, about 3,000 words of AI edits per book, every tool, and sample PDFs to print. There's no time limit. A licence ($149 once) finishes every book and builds the KDP pack; $49 finishes just one.
Can I start with one book and upgrade later?
Yes. A book licence ($49) counts toward the full licence for 60 days, so the upgrade costs $100. The upgrade link is in the app, under Settings → Licence.
Which AI does it use?
The one you choose: Claude, OpenAI, Gemini, OpenRouter, or a free model on your Mac with Ollama or LM Studio, plus any OpenAI-compatible service. Connect several and pick a model for each job.
Is AI included in the price?
No. AI runs on your own account with the provider, who bills you for what you use at their rates. Author Magic shows a small estimate before you start and never marks it up. Models on your Mac are free.
Who owns what I write?
You do. We never see your manuscript. The only text that leaves your Mac is what you send to the AI service you chose.
Does KDP accept books written with AI?
Yes. KDP asks you to disclose AI-generated text, images and translations; AI-assisted editing doesn't need declaring. Author Magic fills in those answers from your dial.
What about IngramSpark or hardcover?
Version 1 is built and tested for KDP paperback and Kindle. The PDF and EPUB are standard files, but we only promise KDP's rules.
Will it help with the blurb?
It drafts one from your book if you ask. The blurb, keywords and categories go into a metadata sheet laid out like KDP's form.
finish the book.
Write it your way, keep it straight, and upload files you know will pass.