Local-first work
Projects, assets, backups and exports can live in an author-controlled workspace.
Compare
A feature-by-feature comparison for authors choosing a tool to write, organize, format and export books for KDP, print and ebook distribution.
Quick read
Atticus is strong as an all-in-one author formatter. Kindle Create is free and KDP-focused. Reedsy Studio is strong for browser writing, collaboration and simple export. Scrivener is strongest for drafting and research. Vellum remains the polished Mac benchmark for book formatting. InkVault focuses on local ownership, connected planning, cleanup, preflight, images and export control.
| Profile | InkVault | Atticus | Kindle Create | Reedsy Studio | Scrivener | Vellum |
|---|---|---|---|---|---|---|
| Best fit | Private book production workspace | All-in-one author writing and formatting | Free KDP-focused formatting | Browser writing, collaboration and formatting | Long-form drafting and research | Polished Mac formatting |
| Platforms | Linux, Windows, Mac | Windows, Mac, Linux, Chromebook/browser | Windows, Mac | Web browser | Mac, Windows, iPad | Mac |
| Main export path | PDF, EPUB, DOCX, HTML | EPUB, PDF, DOCX | KPF, EPUB for reflowable books | EPUB 3, PDF, Word backup | DOCX, PDF, EPUB and more | EPUB, MOBI, PDF, DOCX/RTF content export |
Feature matrix
NO means unsupported, not publicly documented, or only available through a workaround that does not satisfy the row. Notes show important limits.
| Feature | InkVault | Atticus | Kindle Create | Reedsy Studio | Scrivener | Vellum |
|---|---|---|---|---|---|---|
| Windows support Important if the formatter must run outside macOS. | Yes | Yes | Yes | Yesweb | Yes | NoMac only |
| Linux support Useful for authors and small publishers on Linux workstations. | Yes | Yes | No | Yesweb | No | No |
| Mac support Baseline desktop compatibility for many author workflows. | Yes | Yes | Yes | Yesweb | Yes | Yes |
| Local-first project ownership Manuscript, images, backups and exports can remain under the author’s direct control. | Yes | Nocloud-backed PWA | Yeslocal app, KDP output | Nocloud/web | Yes | Yes |
| Self-hosted/private server option For users who want browser access on their own infrastructure. | Yes | No | No | No | No | No |
| Built-in writing editor Lets the author draft or revise inside the same tool. | Yes | Yes | Noformatting tool | Yes | Yes | Noformatting-focused |
| Writing goals or statistics Useful while drafting and revising long manuscripts. | Yes | Yes | No | Yes | Yes | No |
| Story planning workspace Helps manage notes, research, characters, locations or structure before export. | Yes | Nonot core feature | No | YesBoards | Yes | No |
| Linked notes, characters and places Many-to-many project links keep story context attached to chapters. | Yes | No | No | No | No | No |
| DOCX import Common path from Word, Pages, Google Docs or another writing app. | Yes | Yes | Yes | Yes | Yes | Yes |
| EPUB export Required for most ebook distribution workflows. | Yes | Yes | Yesreflowable only | Yes | Yes | Yes |
| Print-ready PDF export Needed for paperback or hardcover interiors. | Yes | Yes | NoKPF-centric | Yes | Yes | Yes |
| DOCX export Useful for editor handoff, backup copies and external review. | Yes | Yes | No | YesWord backup | Yes | Yes |
| KPF export Amazon’s Kindle Package Format for KDP upload. | No | No | Yes | No | No | No |
| PDF/X output Useful for print-production workflows that expect a PDF/X file. | Yesexperimental | No | No | Yes | Yes | Yes |
| KDP-oriented trim, margin and gutter checks Catches paperback geometry issues before upload or proofing. | Yes | Nosmart defaults | NoKDP-focused, limited checks | Notemplate/export driven | No | Noprint settings |
| Trim-size presets Reduces setup mistakes for common paperback sizes. | Yes | Yes | Yes | Yes | Yes | Yes |
| Portrait and landscape print layout export Needed for manuals, workbooks, illustrated books and wide page geometry. | Yes | Nopreset portrait trims | Nolandscape reading for comics only | Noportrait trim presets | Yes | Noportrait trim presets |
| Custom chapter/theme builder Allows repeated visual systems for a series, imprint or brand. | Yes | Yes | No | Notemplates | Yescompile formats | Yes |
| Full-bleed images Important for illustrated books, chapter art and edge-to-edge print interiors. | Yes | Yes | YesKPF; EPUB limits | No | No | Yes |
| Image preflight warnings Flags missing, heavy, non-optimized or risky images before export. | Yes | No | No | No | No | No |
| Structured table editor Needed for manuals, nonfiction, reference books and technical content. | Yes | No | Noknown limitations | No | Nonot a production table tool | No |
| Footnotes or endnotes Common in nonfiction, academic, historical and annotated books. | Yespublication notes | Yes | Nolimited/known issue | Nonot documented | Yes | Yes |
| H2-H6 or multi-level headings Important for structured nonfiction and manuals. | Yes | Yes | Nolimited styles | Nonot documented | Yes | Nosubheads only |
| Callout boxes Useful for tips, warnings, examples and instructional books. | Yesauthor notes/tables | Yes | No | No | No | No |
| Versioning or snapshots Preserves manuscript states before major edits or layout changes. | Yes | Yessnapshots/backups | No | Yestimeline | Yes | No |
| Cloud storage and backups Automatic remote persistence for browser-first workflows. | Nolocal backups | Yes | No | Yes | No | No |
| Real-time collaboration / track changes Useful when editors or co-authors revise in the same workspace. | No | No | No | Yes | No | No |
| SmartFlow chapter-ending adjustment Helps reduce weak final-page tails during PDF generation without rewriting text. | Yes | No | No | No | No | No |
Where InkVault differs
Projects, assets, backups and exports can live in an author-controlled workspace.
Notes, characters, places and chapters can be linked instead of scattered across side files.
Margin, gutter, cover, image, layout and tool checks happen before export.
Structured tables, author notes and publication notes are part of the editor workflow.
Full-page, full-bleed, heavy, missing and non-optimized image states are surfaced.
PDF line-height adjustment can reduce awkward chapter endings without changing the manuscript.
Sources and limits
Competitor features change over time. Rows are intentionally strict: a tool can still be excellent even when it shows NO for a feature outside its core purpose.
FAQ
There is no single best tool for every author. Atticus is strong as an all-in-one writing and formatting app, Vellum is polished on Mac, Scrivener is strong for drafting and research, Reedsy Studio is browser-based and collaborative, Kindle Create is free for KDP formatting, and InkVault focuses on private production control from planning to export.
No. KPF is Kindle Create’s native format. InkVault is designed around project organization, print PDF, EPUB-oriented and editable export workflows, with a handoff path when a KPF package is required.
Yes. InkVault includes portrait and landscape document layout modes, which are useful for manuals, illustrated projects, wide tables and other non-fiction layouts.
Rows are strict. NO means unsupported, not clearly documented by the vendor, or only possible through a workaround that does not satisfy the exact feature row.
It depends on the workflow. InkVault is strongest when the same local workspace must cover writing structure, linked project data, cleanup, layout checks, images, preflight and final exports.
Next steps
Scan the practical writing and publishing problems InkVault is built around.
See problems solvedRead the focused comparison for Mac-first formatting workflows.
Read Vellum comparisonCompare author writing, formatting templates and private ownership paths.
Read Atticus comparison