Tech riderRev. 8 Oct 2026

Quillstone

Ch 137.1of 27 AI Book Writing Software

1Runs oniOS, Mac
2CostsFree plan
3Book outliningYes
4Continuity toolsYes
5Rewrite controlsYes
6Export formatsEPUB, PDF, M4B

6 lines stated Written from the maker's own pages: quillstone.io

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Overview

Quillstone is ranked #13 of 27 in AI book writing software on Specifiction. 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: Yesquillstone.io
Book outlining: Yesquillstone.io
Continuity tools: Yesquillstone.io
Rewrite controls: Yesquillstone.io
Export formats: EPUB, PDF, M4Bquillstone.io

Facts

Purpose: Quillstone combines research, drafting, fact-checking, audiobook creation, cover design, and book publishing exports for journalists and nonfiction authors.quillstone.io · 8 Oct 2026
Research workflow: The app can gather PDFs, documents, notes, and offline reference material and help shape them into an outline.quillstone.io · 8 Oct 2026
Writing tools: Its private AI writing tools can rewrite, expand, tighten, proofread, or continue prose anchored to a sample of the writer’s work.quillstone.io · 8 Oct 2026
Fact checking: A built-in fact checker provides inline citations, needs-citation markers, and a verification report.quillstone.io · 8 Oct 2026
Publishing outputs: Quillstone can prepare EPUB, PDF, M4B, covers, metadata, and publishing checklists.quillstone.io · 8 Oct 2026
Audiobooks and covers: The app supports local chaptered audiobook creation and layered cover design, with optional cloud narration and image generation.quillstone.io · 8 Oct 2026
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.quillstone.io · 8 Oct 2026
Cloud providers: The privacy policy names OpenAI and Anthropic for cloud language models and ElevenLabs for optional narration.quillstone.io · 8 Oct 2026
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.quillstone.io · 8 Oct 2026
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.quillstone.io · 8 Oct 2026
System requirements: Quillstone requires an Apple Silicon Mac (M1 or later) running macOS 15 or newer.quillstone.io · 8 Oct 2026
Intended users: Quillstone is designed for serious nonfiction such as reporting, biography, narrative history, manuals, textbooks, essays, and research-led books.quillstone.io · 8 Oct 2026
Support: Quillstone offers email support and says a real person usually responds within two business days.quillstone.io · 8 Oct 2026