Side by side
First Book ai vs Quillstone
Both stand on ai book writing software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Web
First Book ai combines outlining, voice guidance, chapter drafting, editing, and export in one web workflow. Its free outline option lowers the initial barrier, while one-time credit plans cover finished books.
Visit First Book ai Free plan iPhoneMac
Choose Quillstone if you write nonfiction and want research, fact-checking, audiobook creation, and publishing exports alongside drafting tools. Look elsewhere if you do not have a supported Apple Silicon Mac, or if you need cloud narration and image generation without the $89, paid once Pro license.
Visit QuillstoneThe facts
| First Book ai | Quillstone | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web | iPhone, Mac |
| Lowest paid plan | See the plans | Quillstone Pro: $89, paid once |
| Plans published | 3 | 2 |
| Maker | Not published | Not published |
| Website | firstbook.ai | quillstone.io |
| On ai book writing software | #13 of 27 | #17 of 27 |
First Book ai: what it does well
- Editable eight-chapter outline
- Drafts chapters for individual approval
- Inline editing and depth controls
- Exports Word, EPUB, Markdown, and PDF
- Free outline without a credit card
What to know first
- Paid credits are required for books
- Web platform only
- Generated drafts still need human editing
Quillstone: what it does well
- Collects documents, notes, and offline references for outlining.
- Writing tools support rewriting, proofreading, and continuation based on a writing sample.
- Fact checker provides citations, needs-citation markers, and a verification report.
- Creates EPUB, PDF, and M4B outputs.
- Mac app is offline by default and has no analytics or telemetry.
What to know first
- Requires an Apple Silicon Mac with M1 or later and macOS 15 or newer.
- Cloud narration and image generation are Pro features.
- Pro costs $89, paid once.
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