Write the whole book.
Outline it, draft it with AI, edit it, wrap a cover on it, and walk out with a print-ready interior PDF, a validated EPUB 3, a DOCX, and an audiobook script. Nothing leaves your device unless you ask it to.
Bring in a finished manuscript as .docx, .epub, .md, .html or .txt — Booklyn splits it into chapters, keeps the bold and italics, and you can re-export it in every format.
One prompt, a finished book
Describe the book. Booklyn plans it, writes every chapter, builds the story bible, draws a plate for each chapter, makes the cover, and writes the listing copy. It saves after every step, and you can stop it at any point.
Take it with you
Booklyn installs as a real app — its own icon, full screen, and it keeps working with no signal. Your books live on the device either way.
Your shelf
Book details
Print spec
Outline studio
Generate a chapter plan, then send any chapter to the drafting desk. You can edit everything by hand.
Front matter
Back matter
Story bible
People, places and terms the AI keeps consistent across every chapter it touches.
Continuity check
Scans the drafted chapters for contradictions against the bible and against each other.
Manuscript health
Cover studio
Export the book
Exports are built in your browser. Nothing is uploaded.
Back-of-book index
Page numbers come from the printed layout itself, so they are the pages a reader actually turns to. Rebuild it whenever the manuscript changes.
Audiobook studio
Record each chapter, master it to the ACX technical requirements, and export 192 kbps mono MP3s named the way retailers expect. Everything happens on this device.