AI Tool Comparison
Comparing as AI Grammar & Proofreading ToolsGrammarly vs ProWritingAid
Grammarly
VS
ProWritingAid
Verdict by Category
Detailed Comparison
Feature
Grammarly
ProWritingAid
Pricing
FreemiumGrammarly's Free plan is available at no cost and includes mistake-free writing, tone detection, and 100 AI text generation prompts per month — suitable for individuals with basic needs.
The Pro plan costs $12/member/month billed annually ($30/month when billed monthly) and adds full-sentence rewrites, tone adjustments, brand voice customization, style guide adherence, and 2,000 AI prompts per month.
Enterprise plans are available through Superhuman Go with unlimited members, proactive AI across all apps and tabs, confidential mode, data loss prevention, granular roles and permissions, and dedicated support. Organizations report saving an average of $5,000 per employee per year.
FreemiumProWritingAid offers a free plan with grammar/spelling checks, Story Canvas, 10 rephrases/day, and limited editing report runs — a solid starting point for new writers.
Premium costs $10/month (billed annually at $120) or $30/month and unlocks unlimited line editing reports, unlimited rephrases, 25+ writing analysis reports, 1 Chapter Critique/day, custom style guide, author comparison (90 authors), and custom dictionary.
Premium Pro at $12/month (annual) or $36/month adds 30 Chapter Critiques/day, live workshops with top authors and editors, 200+ on-demand expert workshop library, daily co-writing sprints, and 65% off Story Credits. Lifetime licenses are also available: $399 (Premium) and $699 (Premium Pro) — one-time payment, no recurring fees.
Categories
AI Writing Assistant ToolsAI Productivity ToolsAI Copywriting Tools
AI Writing Assistant ToolsAI Productivity Tools
Summary
AI writing assistant for real-time grammar, clarity, tone, and style — works everywhere you write
Complete storyteller's toolkit with deep editing, story critique, plot analysis, and writer community
Grammarly Pros & Cons
Pros
- Works across every app and browser — not just a standalone editor
- Trusted by 40M+ users and 50K+ organizations worldwide
- Tone and clarity suggestions go well beyond basic spell-check
- Free plan is genuinely useful with no credit card required
- Enterprise features include DLP, SSO, and brand style guides
- Integrates natively with Google Docs, Outlook, and Slack
Cons
- Pro plan can be expensive at $30/month when billed monthly
- AI generation prompts are limited even on Pro (2,000/month)
- Suggestions can sometimes feel overly prescriptive for creative writing
- Desktop app required for full cross-app functionality
- No long-form AI document drafting like dedicated writing tools
ProWritingAid Pros & Cons
Pros
- Most comprehensive developmental editing reports of any AI writing tool
- Story Critique analyzes plot, characters, and reader engagement at manuscript level
- Trusted by USA Today and NYT bestselling authors
- Lifetime license option is the most cost-effective long-term investment
- Covers full writing workflow from planning through publication
- Integrates with Scrivener, Google Docs, Word, and browser extensions
- Free K-12 education access and 20% student discount
Cons
- Free plan limited to 2 report runs/day and 500 words at a time
- Monthly Premium Pro ($36/mo) is expensive for casual writers
- Only supports English — no multilingual support
- Story Credits for full manuscript analysis are an additional purchase
- Learning curve to get the most from 25+ report types