kdpbookai vs Vellum

A Mac app that turns a manuscript into ebooks and print books. Here is how it differs from kdpbookai, from Vellum's own site as read on November 10, 2026.

Checked November 9, 2026Plain text version

Side by side

Feature	Vellum	kdpbookai
Price	$249.99 for ebooks and print, $199.99 for ebooks only, before tax; free to download and try	Free to try with 1,200 credits (files carry a watermark); $24 for one book, or monthly plans from $19
Runs on	Mac only, macOS 14 or newer	Web app, in any modern browser; sign in with Google
Imports	Your manuscript; it builds the title page and contents for you	DOCX, PDF, Markdown or plain text, word for word, using no credits
Ebook	EPUB	Kindle EPUB for text books; fixed-layout EPUB for picture books
Print	Paperback or hardcover PDF (PDF/X-1a), 24 trim sizes plus large print, full-bleed pages	Interior PDF and cover PDF sized for KDP, checked against KDP's print rules
Covers	Not stated on its site	Yes, built to the page count, with spine and barcode area
AI writing or pictures	Not stated on its site	Yes: plans, writes and draws where the book needs it; your own imported text is not changed
Book types	Text books of any genre, including box sets	36 types, including picture books, coloring books, comics, manga, puzzles and journals

“Not stated on its site” means we did not find it on the pages below, not that the tool lacks it.

Which one fits

Choose Vellum if

You work on a Mac and have a finished text manuscript.
You want ebook and print files from one Mac app.
You publish box sets of a finished series.

Choose kdpbookai if

You want to start from an idea rather than a finished manuscript.
You are making a picture book, coloring book, comic or puzzle book, not only a text book.
You want the cover and the KDP listing text made with the book.

Sources

Read on November 10, 2026. Prices and features change; Vellum's own site has the final word. Vellum is a trademark of its owner, and kdpbookai is not connected to it. Spotted something out of date? Tell us and we will fix it.

Vellum home page