# kdpbook.io vs Squibler: an honest comparison

Source: https://kdpbook.io/compare/squibler-alternative · Updated 2026-09-28

We make kdpbook.io, so we're not neutral. Everything about Squibler comes from its public pages as of 2026-09-28 (sources at the end of the page); prices and features may have changed since.

Checked 2026-09-28 on the competitor's public pages. Squibler is an AI book and screenplay writer: it generates a full-length draft from a prompt and exports PDF, Word or ePub, with a free tier of 1,000 credits and Plus at $15.83/month billed yearly ($29.99 monthly). Its pages don't list KDP trim sizes or a full-wrap cover. kdpbook.io builds the interior, the cover sized from the final page count and a Kindle EPUB.

| Criterion | kdpbook.io | Squibler |
| --- | --- | --- |
| Main job | Writes and illustrates the book, or lays out your own manuscript, then builds the KDP files | Generates and edits book and screenplay drafts |
| Writing the book | Plans and writes the whole book from one chat (a novel runs 55,000–120,000 words), or imports your manuscript | Drafts from a prompt (chapters and scenes), then a full-length book on paid plans; you can attach your own manuscript |
| Output | Interior PDF, full-wrap cover PDF, Kindle EPUB + Kindle cover, and a KDP listing sheet | PDF, Word (.docx) or ePub, per its software page; its pricing lists PDF and DOCX export on Plus |
| KDP print specs | Trim, bleed, margins, spine and page limits applied automatically, with a preflight check | Its software page says exports are ready for Amazon KDP; trim sizes, margins and bleed not documented |
| Cover | Full-wrap cover PDF sized from trim, paper and final page count | AI cover art; back cover, spine and full-wrap sizing not documented |
| Kindle eBook | Kindle EPUB (reflowable or fixed layout) + Kindle cover | ePub export; fixed layout not documented |
| Book types | 36 book types, from board books to novels, cookbooks, puzzle books and comics | Novels, non-fiction, memoir, screenplays and personalized gift stories |
| Illustrations | 61 illustration styles or your own; character reference sheets reused on every illustration | Images and short video clips from highlighted passages; placing art in a print layout not documented |
| Languages | 34 KDP-supported languages | Written in English, then translated into 80+ languages, per its FAQ |
| Listing | Listing sheet: title, description, 7 keywords, categories and AI-disclosure answers | Not documented; its FAQ says it has no built-in publishing or sales-tracking tools |
| Printed copies | Not offered: files are for KDP or another printer | Softcover and hardback copies on Plus, per its help center (its pricing page doesn't list them) |
| Pricing | Free: 2,000 credits once, no card. Plans $25–$99/month | Free tier; $15.83–$49.17/month billed yearly, $29.99–$89.99 monthly |

## What Squibler is

A web writing app with AI generation. You describe an idea and it drafts a book organized into chapters and scenes, then a full-length manuscript on paid plans; it also writes outlines and screenplays, and you can attach your own manuscript to a prompt. Elements hold the characters, settings and key details the AI refers to, the Smart Writer proposes revisions you accept or reject, and highlighted passages can become images or short video clips. Its pages also mention AI cover art and translation into 80+ languages, and its help center lists printed softcover or hardback copies on Plus.

## Where Squibler shines
- Full-length drafts from one prompt, for novels, non-fiction and memoir, plus screenplays.
- A free tier with no time limit, and a Pro plan with unlimited AI credits.
- Elements that keep characters and settings consistent while the AI writes, and a Smart Writer whose suggestions you accept or reject.
- Images and short video clips from highlighted passages, for pitching and promotion.
- Printed softcover and hardback copies on Plus, per its help center; its terms leave you full ownership of what you create or generate.

## Squibler pricing (as published on 2026-09-28)
- Free: $0 with 1,000 AI credits (its plan card says per month; its help center calls them trial credits, after which you need a plan).
- Plus: $29.99/month, or $15.83/month billed yearly, with 10,000 credits a month, full-length manuscripts and PDF and DOCX export.
- Pro: $89.99/month, or $49.17/month billed yearly, with unlimited AI credits.
- Credits don't map to words: its help center says Plus's 10,000 credits make anywhere from a few thousand to tens of thousands of AI words a month.
- No refunds for partial billing periods; within the legal withdrawal period (14 days in the EU and UK, 7 days elsewhere, including the US) a refund excludes the value of what you used.

## Choose Squibler if
- You want a full-length text draft to rewrite and shape yourself, or a screenplay.
- You generate many drafts and want unlimited credits for one monthly price (Pro).
- You want printed copies ordered from the same app you wrote in (its help center lists softcover and hardback on Plus).

## Choose kdpbook.io if
- You want KDP's print files built for you: trim, margins, bleed and a full-wrap cover sized from the final page count.
- Your book is illustrated (picture book, comic, cookbook, coloring book), with characters that look the same on every page.
- You want a listing sheet with the files: title, description, 7 keywords, categories and AI-disclosure answers.

## Questions

Q: Is kdpbook.io a Squibler alternative?
A: If the goal is a book on Amazon KDP, yes. Both write full-length books from a prompt. kdpbook.io also typesets the interior to a KDP trim, sizes the full-wrap cover from the final page count and exports a Kindle EPUB; a 336-page novel (about 80,000 words) is estimated at about 5,377 credits (≈ $54), interior, cover and Kindle file included. For screenplays, or a text draft you'll format in another tool, Squibler covers more.

Q: Can I upload a Squibler PDF to KDP?
A: Squibler says its PDF, Word and ePub exports are ready for Amazon KDP, but its public pages don't list trim sizes, margins or bleed. KDP wants the interior PDF at the trim you pick (the trim + 0.125 in wide and + 0.25 in tall when art runs to the edge) and the paperback cover as one PDF with back, spine and front, sized from the page count: a 200-page 6 × 9 in book on white paper has a 0.45 in spine and a 12.7 × 9.25 in cover file. Check both in KDP's previewer before you publish.

Q: Who owns a book written with Squibler or kdpbook.io?
A: Squibler's terms say you keep full ownership of what you create or generate with it. kdpbook.io's paid plans include a commercial license for exported books; free-plan exports carry a preview watermark and aren't for sale. With either tool, KDP asks you to disclose AI-generated text and images when you publish.

## Sources
- [squibler.io (features and FAQ)](https://www.squibler.io/)
- [Squibler pricing](https://www.squibler.io/pricing)
- [Squibler AI book generator](https://www.squibler.io/ai-book-generator/)
- [Squibler book writing software (export formats)](https://www.squibler.io/book-writing-software/)
- [Squibler personalized books](https://www.squibler.io/personalized-books/)
- [Squibler help: What plans are available?](https://www.squibler.io/knowledge-center/account/pricing-plans/)
- [Squibler help: Is there a free trial?](https://www.squibler.io/knowledge-center/account/free-trial/)
- [Squibler help: What are credits?](https://www.squibler.io/knowledge-center/account/credits-explained/)
- [Squibler help: Cancellation and refunds policy](https://www.squibler.io/knowledge-center/account/cancellation-and-refunds-policy/)
- [Squibler terms (effective April 21, 2026)](https://www.squibler.io/terms-and-conditions/)
- [KDP Help: Set Trim Size, Bleed, and Margins](https://kdp.amazon.com/en_US/help/topic/GVBQ3CMEQW3W2VL6)
- [KDP Help: Create a Paperback Cover](https://kdp.amazon.com/en_US/help/topic/G201953020)
- [KDP Help: Content Guidelines (AI-generated content)](https://kdp.amazon.com/en_US/help/topic/G200672390)