Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. Spin Rewriter AI records 20,716 monthly visits with +7.5% growth and Free Trial, Paid pricing.
Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
AI article rewriter that produces unique, human-quality text
| Dimension / Metric | | |
|---|---|---|
| Official Domain | grammarly.com | spinrewriter.com |
| Pricing Model | Freemium | Free Trial, Paid |
| Monthly Visits | 58.87M (58,867,412) | 20.72K (20,716) |
| MoM Traffic Delta | -916.08K (-1.5%) | +1.45K (+7.5%) |
| Primary Market & Share | 🇺🇸 United States (51.9%) | 🇺🇸 United States (47.7%) |
| Direct Visits / mo | 25.4M | 8.27K |
| User Rating | 4.4 | 3.6 |
| 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.
AI article rewriter that produces unique, human-quality text
A large-language-model engine that determines the meaning of each word in context, producing readable rewrites instead of awkward synonym substitution.
Generate up to 1,000 unique versions of one source article in a single pass, enough to populate many sites from one piece of content.
Supports all five popular spintax formats and can rewrite multiple articles in bulk, fitting existing publishing pipelines.
Virtually every major SEO tool integrates Spin Rewriter through its API, so rewrites can run from inside your preferred software.
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.
Paraphrase, proofread and summarize text with an AI writing workspace
Paraphrase, proofread and summarize text with an AI writing workspace
Free browser AI humanizer that rewrites AI text to read naturally
Free browser AI humanizer that rewrites AI text to read naturally
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.
Humanize AI text and check how human it reads
Humanize AI text and check how human it reads
Turn AI-generated text into natural, human-sounding writing
Turn AI-generated text into natural, human-sounding writing
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.
Free AI paraphraser with seven rewriting modes
Free AI paraphraser with seven rewriting modes
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.
AI writing assistant with autocomplete, research, and a Chrome extension
AI writing assistant with autocomplete, research, and a Chrome extension
