No. 16 of 27 ·AI Book Writing Software

Quillstone

Mac · iPhone

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Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

Quillstone is ranked #16 of 27 in AI book writing software on Freedom251. It runs on iOS, macOS. There is a free plan.

Quillstone plans and pricing

All plans

Quillstone Free Free forever All nine writing and editing tools · private AI writing and editing · fact checker · research and offline retrieval · audiobook creation and voice cloning · cover design · EPUB/PDF export quillstone.io · 8 Oct 2026

Quillstone Pro $89 once one-time license Everything in Free · bring-your-own-key cloud editing · cloud narration and image generation · publish-ready export bundle · no markup on provider costs quillstone.io · 8 Oct 2026

Compared on AI book writing software

Free plan: Yes
Book outlining: Yes
Continuity tools: Yes
Rewrite controls: Yes
Export formats: EPUB, PDF, M4B

Best Quillstone alternatives

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The record

Purpose: Quillstone combines research, drafting, fact-checking, audiobook creation, cover design, and book publishing exports for journalists and nonfiction authors.
Research workflow: The app can gather PDFs, documents, notes, and offline reference material and help shape them into an outline.
Writing tools: Its private AI writing tools can rewrite, expand, tighten, proofread, or continue prose anchored to a sample of the writer’s work.
Fact checking: A built-in fact checker provides inline citations, needs-citation markers, and a verification report.
Publishing outputs: Quillstone can prepare EPUB, PDF, M4B, covers, metadata, and publishing checklists.
Audiobooks and covers: The app supports local chaptered audiobook creation and layered cover design, with optional cloud narration and image generation.
Privacy: The Mac app is offline by default, has no analytics or telemetry, and sends selected text directly to a chosen cloud provider only when the user enables it.
Cloud providers: The privacy policy names OpenAI and Anthropic for cloud language models and ElevenLabs for optional narration.
Other external services: The privacy policy identifies Brave for web search, OpenAI for online fact-checking, Hugging Face and CivitAI for model downloads, Sparkle for updates, and Lemon Squeezy for license validation.
Local data: The privacy policy says manuscripts, outlines, characters, covers, generated images, narration audio, and exports are stored on the Mac, and entered API keys are encrypted there.
System requirements: Quillstone requires an Apple Silicon Mac (M1 or later) running macOS 15 or newer.
Intended users: Quillstone is designed for serious nonfiction such as reporting, biography, narrative history, manuals, textbooks, essays, and research-led books.
Support: Quillstone offers email support and says a real person usually responds within two business days.
Price from: Free

Where it ranks on Freedom251

Best AI Book Writing Software in 2026#16 of 27

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Sources

quillstone.io· checked 8 Oct 2026
quillstone.io/privacy· checked 8 Oct 2026
quillstone.io/support/· checked 8 Oct 2026