Comparisons, checked 17 October 2026

Onwarder vs World Anvil

Q: What does Onwarder cost?

Writing is free. Cloud fixed prices: £8 a month or £79 a year in pounds sterling; €9 a month or €89 a year in euros; $10 a month or $99 a year in US dollars. Checkout confirms the currency.

An online worldbuilding platform with a wiki-style world bible, interactive maps, timelines and family trees, community tools, and Manuscripts for paid members.Source [1]Source [6]

World Anvil publishes your world; Onwarder keeps your novel consistent with it and finishes the book.Source [3]Source [6]

Side by side.

Onwarder and World Anvil, question by question
	Onwarder	World Anvil
Price	Free for good, with no account. Cloud is $10 a month or $99 a year.	A free public account; Guild membership from $4.50 a month billed yearly. Manuscripts need a paid plan.Source [1]Source [2]Source [3]
Runs on	On the web, Mac, Windows and Linux, with iPhone in beta, and Android coming.	Web.Source [2]
Writing with no connection	Books kept on your device open and save with no connection in the desktop and phone apps.	World Anvil says a connection is required.Source [2]
Story bible linked to the book	Characters, places, factions and items, a click from the page.	Manuscripts link to your world's articles: characters, places, maps and timelines.Source [3]Source [6]
Checks the book against your notes	Built in, no AI: warns when a dead character acts or a lost item turns up again.	Linked articles help by hand; no automatic check found.Source [6]
Ebook and paperback files	EPUB, Word, Markdown and PDF, and paperback interiors at three trim sizes.	Manuscripts export as HTML; Word and EPUB need another tool.Source [4]
AI, and training on your writing	Optional and off for every book. Bring your own. Never used to train AI.	No generative AI found. World Anvil says it does not train AI models on users' work.Source [2]Source [7]
Getting your work out	Every book exports whole, at any time, on any plan.	Your world lives online; members can export it.Source [5]

Where World Anvil is better

Interactive maps, fantasy calendars, family trees and diplomacy webs.Source [1]Source [6]
Tools for publishing a world to readers and sharing it with a community.Source [1]Source [6]

Choose World Anvil if

You build worlds to share with readers or players, as much as to write a novel in.Source [1]Source [6]

Choose Onwarder if

You want the story bible, recorded story events and a continuity check beside the manuscript, with no AI needed.
You want everything for writing free, on any computer or phone, with no account and no time limit.
You want the ebook and the paperback interior from the same place you wrote the book.

Try it with one chapter, free

Questions.

Can I move my book from World Anvil?

Export it as a Word document and import that into Onwarder; it keeps chapters, headings, bold and italics. Start with a copy of one chapter, and keep your original until you are happy. We do not promise to carry over every other tool's notes, links or formatting.

Do I need AI to use Onwarder?

No. Writing, planning, the continuity check and Finishing all work without AI. If you connect your own AI, it is off for every book until you allow it, and Onwarder never uses your writing to train AI.

What does Onwarder cost?

Free for good, with no account. Cloud is $10 a month or $99 a year.

Sources, all opened 17 October 2026

Competitor prices are as shown on the linked pages, in US dollars where stated, before tax. Product names identify the tools compared and do not imply endorsement.

Product names are trademarks of their owners. Facts are from each maker's own pages, checked on the date shown. Spotted something out of date? Tell us and we'll fix it.