Scriblio vs Vellum
Vellum is where finished books go to get beautiful. Scriblio is everything that happens before that — and it doesn’t care what computer you own. An honest look at two tools solving different problems.
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Scriblio
The pipeline from idea to polished manuscript: auto-built story bible, continuity checks, AI polish with track changes — in any browser, on any machine, Windows included.
Choose Scriblio if
you want help with the writing itself — story bible, continuity, polish — or you’re on Windows, where Vellum simply doesn’t run.
Vellum
The gold standard for indie book formatting: gorgeous EPUB and print files in a few clicks, one-time price, free lifetime updates. Formatting only — and Mac only.
Choose Vellum if
your manuscript is finished, you own a Mac, and you want the most beautiful ebook and print files in indie publishing today.
Feature by feature
| Capability | Scriblio | Vellum |
|---|---|---|
| Write your manuscript in-appVellum is formatting software — you write elsewhere and import | Yes | No |
| Auto-extracting story bibleBuilds characters, world & plot from your chapters | Yes | No |
| Cross-chapter consistency checksCatches continuity and canon errors | Yes | No |
| AI polish with track changesVellum has no AI of any kind | Yes | No |
| Professional print & ebook formattingVellum is the category gold standard; Scriblio’s export is rolling out | Partial | Yes |
| Device-accurate store previewsSee your book on Kindle, phone, and print before publishing | No | Yes |
| Box sets & large print editionsPlus hardcovers and 24 print trim sizes | No | Yes |
| Works on Windows / any browserVellum requires macOS 13+ — no Windows, web, or tablet version | Yes | No |
| Series-level supportA shared story bible across books, not just box-set assembly | Yes | Partial |
| Ongoing free tierVellum is free to try in full, but exporting requires the license | Yes | Partial |
Based on each tool’s public materials as of mid-2026. ◐ = partial or in development.
Pricing, plainly
$5/mo that becomes real AI credit · most writers spend $2–$4/mo · 12 free AI calls every month, no card required
One-time: Vellum Ebooks $199.99, or Vellum Press $249.99 for ebook + print — free to try, purchase required to export; Mac-only (as of mid-2026)
What only Scriblio brings
The whole pipeline, not the last step
Vellum picks up when your book is finished. Scriblio is everything before that: brainstorming, an auto-built story bible, drafting, continuity checks, and AI polish with track changes — the months of work that produce the manuscript Vellum formats in an afternoon.
Windows writers aren’t locked out
Vellum runs only on macOS 13+. There is no Windows version, no web version, and no tablet app — PC authors resort to renting cloud Macs. Scriblio runs in any browser on any machine.
Help with the writing itself
A formatter can’t tell you that chapter 18 contradicts chapter 3, or keep your character details straight across a series. Scriblio’s living story bible and continuity checks work on the story, not just the typesetting.
They actually work well together
This isn’t either/or. Plenty of writers will draft, polish, and continuity-check in Scriblio, export to Word, and format in Vellum today — while Scriblio’s own formatting and export roll out.
Where Vellum is genuinely strong
No tool wins on everything, and we won’t pretend otherwise. Vellum does some things well:
- ✓The gold standard for indie book formatting — gorgeous, store-ready EPUB and print PDF output with a near-zero learning curve.
- ✓A genuinely fair one-time price: buy once, and even major updates (like Vellum 4.0 in late 2025) have been free.
- ✓Box sets, large print editions, hardcovers, and device-accurate previews — the deep publishing details done right.
- ✓Truly free to try: you can import and style your entire book before paying — you only purchase to export.
Common questions
Is Scriblio a Vellum alternative?
For the writing, absolutely — Scriblio covers everything Vellum deliberately doesn’t: drafting, story bible, continuity, and AI polish. For final formatting, Vellum is still the category gold standard today; Scriblio’s formatting and export are rolling out. If you’re on Windows, Scriblio works where Vellum simply doesn’t exist.
Is there a Vellum for Windows?
No — as of mid-2026 Vellum remains Mac-only (macOS 13 or newer), with no Windows, web, or tablet version. PC authors typically rent a cloud Mac just to format. Scriblio runs in any browser on any machine, no workarounds.
Can you write your book in Vellum?
Not really. Vellum includes a basic text editor for fixes, but it has no drafting tools, no story bible, and no revision workflow — the intended path is to write elsewhere and import a finished .docx. Scriblio is built for the writing itself.
Can I use Scriblio and Vellum together?
Yes, and it’s a sensible combination today: write, polish, and continuity-check in Scriblio, export your manuscript, and format it in Vellum on a Mac. One tool for the book, one for the bookmaking.
Try Scriblio free — and decide for yourself.
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