Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. WriteABookAI records 6,885 monthly visits with -14.1% growth and One-time purchase (no subscription) pricing.
Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
Turn your expertise into a structured, publish-ready non-fiction book with AI assistance
| Dimension / Metric | | |
|---|---|---|
| Official Domain | grammarly.com | writeabookai.com |
| Pricing Model | Freemium | One-time purchase (no subscription) |
| Monthly Visits | 58.87M (58,867,412) | 6.89K (6,885) |
| MoM Traffic Delta | -916.08K (-1.5%) | -1.13K (-14.1%) |
| Primary Market & Share | 🇺🇸 United States (51.9%) | 🇺🇸 United States (37.4%) |
| Direct Visits / mo | 25.4M | 2.67K |
| User Rating | 4.4 | 4.2 |
| Supported Platforms | Website | Website |
Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
Works natively inside Chrome, Safari, Firefox, Edge, Windows, Mac, Google Docs, MS Office, and mobile keyboards to flag grammar mistakes, rewrite tangled sentences, and shift tone toward confident, empathetic, or executive registers.
Deploys contextual AI agents that predict how a target audience will react to a draft, locate credible supporting citations, grade essays against rubric criteria, and generate drafts using up to 2,000 monthly prompts on Pro.
Scans text against billions of web pages and academic databases for accidental plagiarism, detects AI-generated passages, and logs transparent document provenance via Authorship reports in Google Docs and Word.
Enables teams on Pro and Enterprise plans to codify company terminology, ban deprecated jargon, enforce inclusive language, insert shared Snippets, and surface internal company definitions inline.
Turn your expertise into a structured, publish-ready non-fiction book with AI assistance
Describe your expertise and target readers, and the platform proposes chapter structures with key points built for your genre and audience.
The AI expands an outline into full chapters while carrying context across the whole manuscript for consistent tone and terminology.
Predictive suggestions appear as you type, helping you keep momentum and push past blank-page moments during long writing sessions.
Select any passage and request a rewrite to improve clarity, flow and professional presentation without leaving the editor.
SpecialistOutstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker.
SpecialistOutstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker.
Excels at heavy paraphrasing and text rewriting, but offers less seamless inline real-time proofreading across all apps.
Excels at heavy paraphrasing and text rewriting, but offers less seamless inline real-time proofreading across all apps.
Provides strong multilingual grammar and style checking across apps, but offers fewer advanced generative AI features.
Provides strong multilingual grammar and style checking across apps, but offers fewer advanced generative AI features.
Delivers deeper manuscript analysis and structural reports, but has a steeper learning curve than Grammarly.
Delivers deeper manuscript analysis and structural reports, but has a steeper learning curve than Grammarly.
SpecialistAI academic writing assistant that edits, cites, and checks your manuscript right where you write
SpecialistAI academic writing assistant that edits, cites, and checks your manuscript right where you write
SpecialistHighlights readability and sentence complexity visually, but lacks automated grammar correction and browser-wide extension support.
SpecialistHighlights readability and sentence complexity visually, but lacks automated grammar correction and browser-wide extension support.
Great for sentence-level tone adjustments and rewriting, but less comprehensive for standalone grammar rules and style guides.
Great for sentence-level tone adjustments and rewriting, but less comprehensive for standalone grammar rules and style guides.
Free / Open-sourceBook writing software that keeps your whole novel in one place
Free / Open-sourceBook writing software that keeps your whole novel in one place
AI writing assistant with autocomplete, research, and a Chrome extension
AI writing assistant with autocomplete, research, and a Chrome extension
Offers similar inline grammar correction and snippets, but with a smaller ecosystem of browser extensions and integrations.
Offers similar inline grammar correction and snippets, but with a smaller ecosystem of browser extensions and integrations.
Free / Open-sourceTurn one idea into a finished, sellable book with cover and audiobook included
Free / Open-sourceTurn one idea into a finished, sellable book with cover and audiobook included
Free / Open-sourceAI book-writing suite that keeps your own author voice
Free / Open-sourceAI book-writing suite that keeps your own author voice
