Calliope
8.0#19 in writing appsFrom €99 a yearFree planWebAPI
VisitCalliope vs First Book ai
First Book ai
5.9#26 in ai book writing softwareWeb
VisitWhat both publish
| Fact | Calliope | First Book ai |
|---|---|---|
| Audience | The maker describes Calliope as intended for authors who want AI help with thinking and organisation while writing their own book. | The maker describes the product as intended for professionals seeking to turn their expertise into a book. |
| Exports | Finished books can be exported to Markdown, Google Docs, DOCX, EPUB and typeset PDF; Markdown works without an account. | Books can be exported in Word (.docx), EPUB, Markdown, and PDF. |
| Headquarters | Bratislava, Slovakia | Copenhagen, Denmark |
| Privacy | The privacy policy says Rhymenoceros is a GDPR controller, uses hosting, AI-model, analytics and payment subprocessors, does not sell content or build advertising profiles, and supports deletion requests. | The privacy policy says it uses HTTPS/TLS encryption and access controls, and stores manuscripts and uploads on secure EU or US servers. |
Calliope plans
- Free editorFree
- €10 credit pack€10, paid once
- €50 credit pack€50, paid once
- €100 credit pack€100, paid once
- Subscription monthly€12 a month
- Subscription annual€99 a year
First Book ai plans
- 1 CREDIT$29, paid once
- 5 CREDITS$69, paid once
- 20 CREDITS$199, paid once
Pick Calliope if…
Calliope may suit book writers who want outlining, chapter organization, and continuity tools in a web editor. Its free plan is relevant to writers working on unlimited books.
Pick First Book ai if…
You want what its maker publishes above — check its page for the details.