kdpbook.io vs Librava (ex-BooksGenie): an honest comparison
Librava, formerly BooksGenie, is a low- and medium-content suite: 11 puzzle generators, coloring, journal and planner interiors, a children's story designer and a full-wrap cover maker, from $11.99/month (Basic exports PNG only; vector 300 DPI book exports start on the $16.99 Pro plan). kdpbook.io makes complete books in 36 types, including novels, non-fiction and comics, and adds a Kindle eBook and a listing sheet.
By kdpbook.io editorialUpdated
We make kdpbook.io, so we’re not neutral. Everything about Librava below comes from its public pages as of (each row links its source); prices and features may have changed since. Spot an error? Write to contact@thevibecodingagency.fr.
At a glance
| Criterion | kdpbook.io | Librava |
|---|---|---|
| Output | Complete interior PDF, laid out page by page | 300 DPI interior and cover files: PNG only on Basic, 10 vector book exports a day on Pro, unlimited PDF on Business source: Librava page for “Output” (opens in a new tab) |
| KDP specs | Trim, bleed, margins, spine and page limits applied automatically, with a preflight check | Margins, gutter and bleed calculated from trim and page count source: Librava page for “KDP specs” (opens in a new tab) |
| Cover | Full-wrap cover PDF sized from trim, paper and final page count | Full-wrap cover PDF at 300 DPI, spine sized from page count and paper, all 17 KDP trims source: Librava page for “Cover” (opens in a new tab) |
| Kindle eBook | Kindle EPUB (reflowable or fixed layout) + Kindle cover | Not documented: no EPUB or Kindle file export listed (its cover page mentions eBook front covers) source: Librava page for “Kindle eBook” (opens in a new tab) |
| Book types | 36 book types, from board books to novels, cookbooks, puzzle books and comics | Low- and medium-content: coloring, activity, journals and planners, puzzle books, worksheets, children's storybooks source: Librava page for “Book types” (opens in a new tab) |
| Puzzles | Generated and verified by code, with solutions | 11 generators, including sudoku variants, kakuro, Numberlink, Hashi and Drop Quote, with answer keys source: Librava page for “Puzzles” (opens in a new tab) |
| Character consistency | Character reference sheets reused on every illustration | Character traits locked from the first description (“seed-locking”) source: Librava page for “Character consistency” (opens in a new tab) |
| Languages | 34 KDP-supported languages | Stories in English, Spanish, French, German and Italian source: Librava page for “Languages” (opens in a new tab) |
| Listing | Listing sheet: title, description, 7 keywords, categories and AI-disclosure answers | Not documented (its story designer says it handles the book's “descriptive fields”) source: Librava page for “Listing” (opens in a new tab) |
| Editing | Page editor with live preview, AI rewrites and image redraws; continuous KDP preflight and a 3D book preview | Drag-and-drop editor for fonts, borders, headers and page numbers source: Librava page for “Editing” (opens in a new tab) |
| Pricing | Free: 2,000 credits once, no card. Plans $25–$99/month | $11.99–$35.99/month ($10.16–$28.75 billed yearly); 2-day free trial source: Librava page for “Pricing” (opens in a new tab) |
What Librava is
A web studio for KDP books and printables. It has a coloring book maker (30–120 pages of line art from one theme), an activity coloring book maker, a journal and planner maker (lined, dotted, grid, graph, music and blank pages, calendars, habit trackers), a children's story designer that splits a story across pages and illustrates each scene, an AI interior designer, a full-wrap cover creator (spine sized from page count and paper; generate again for a new layout), and 11 puzzle generators with answer keys, plus a puzzle book maker that mixes them. Margins, gutter and bleed are calculated for KDP, and a drag-and-drop editor changes fonts, borders, headers and page numbers.
Where it shines
- A deep puzzle range: sudoku (classic, Samurai, Jigsaw, Killer), kakuro, word search, crossword, criss-cross, cryptogram, Numberlink, Drop Quote, Hashi bridges, Worduko and mazes, with answer keys.
- Several puzzle generators (sudoku, mazes, Hashi, Numberlink, Worduko) cost no credits; the others cost 0–2 credits a puzzle.
- A low entry price: $11.99/month, or $10.16/month billed yearly.
- Hands-on layout: a drag-and-drop editor for fonts, borders, headers and page numbers, with margins, gutter and bleed calculated for KDP.
- Commercial rights to everything you generate, including during the free trial.
Librava pricing
- Basic $11.99/month ($10.16/month billed yearly, $122/year), Pro $16.99 ($13.58, $163/year), Business $35.99 ($28.75, $345/year).
- 500, 700 or 1,500 AI credits by plan. Basic exports PNG only; Pro allows 10 vector 300 DPI book exports a day; Business has unlimited 300 DPI PDF exports. The AI coloring and storybook suite is listed on Pro and Business.
- AI coloring books and storybooks cost 5 credits per outline plus 10 per image; AI covers and interiors 5 credits per design. Top-up credits don't expire.
- A 2-day free trial on every plan (plan cards and FAQ).
As published on October 15, 2026. See the current prices on its website.
Which one should you choose?
Choose Librava if…
- Puzzle books are your main line and you want many puzzle types, most of them without credit costs.
- You make low-content interiors, worksheets or printables and want a low monthly price.
- You like arranging each page yourself in a drag-and-drop editor.
Choose kdpbook.io if…
- You also publish novels, non-fiction, cookbooks or comics, not only low- and medium-content books.
- You want a Kindle eBook and a KDP listing sheet from the same project.
- You want to start without a card: 2,000 free credits once, and only what is produced is charged.
Questions
Is Librava the same as BooksGenie?
Yes. A banner on librava.ai says BooksGenie.ai has officially rebranded to Librava.ai. Its tools cover coloring, puzzle, journal, planner and children's story interiors, plus full-wrap covers.
Is kdpbook.io a Librava alternative?
Yes, if you want complete books rather than interiors. kdpbook.io writes, illustrates and lays out 36 book types and exports the interior PDF, the full-wrap cover, a Kindle eBook and a listing sheet. A 108-page puzzle book is estimated at about 460 credits, a 106-page kids' coloring book at about 1,803.
Can Librava make Kindle eBooks?
Its public pages list PDF and PNG exports, and its cover maker mentions eBook front covers, but we found no EPUB or Kindle file export (checked October 15, 2026). kdpbook.io exports a Kindle EPUB, reflowable or fixed layout, for the book types that suit Kindle; coloring, puzzle, activity and journal books are print only because KDP lists them as unsuited to Kindle.
Sources · read on October 15, 2026
- librava.ai (opens in a new tab)
- Librava pricing (opens in a new tab)
- Librava children's story designer (opens in a new tab)
- Librava cover maker (opens in a new tab)
- kdpbook.io, the AI book generator for KDP and kdpbook.io pricing
We re-read every comparison at least every 90 days. Spot an error? Write to contact@thevibecodingagency.fr.
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