Grammarly vs ProWritingAid
- ✦ Grammar checking
- ✦ Plagiarism detection
- ✦ Tone suggestions
- ✦ Grammar checker
- ✦ 200+ writing reports
- ✦ Readability score
Grammarly and ProWritingAid are both AI Writing Tools tools. Grammarly starts at $30/mo, ProWritingAid at $30/mo. Compare features, pricing, and ratings below to find the best fit for your team.
When to Choose Grammarly vs ProWritingAid
The question that matters: “In what situation will I regret choosing A over B after 3 months?”
The Team style guide pushes real-time corrections into Google Docs, team chat, and email clients - cutting first-pass copy editing for 60-70% of contributor submissions.
Style improvements embedded in Git-based doc workflows catch variant terminology - 'click' vs 'tap' - that fragments UX, without weekly copyedit meetings.
Tone suggestions catch aggressive or casual phrasing in the Browser extension, keeping outbound emails on-voice without review cycles that eat 4+ hours daily.
Plagiarism detection scans 16+ billion sources in under 3 seconds per document, catching unattributed language before it reaches external stakeholders.
Style improvements catch passive voice and unclear modifiers in spec documents, cutting engineering scope clarification requests by 35% and compressing feedback loops.
200+ writing reports automate readability scoring and cliché detection across batches. First-pass assessment drops from 40 hours of senior editor time to 5 days.
Dialogue checker flags when a character's speech pattern shifts mid-act. Pacing analysis identifies exposition-heavy sections slowing plot momentum.
Run landing page copy through Readability score and Clichés detector. The top-converting variant typically scores 2 grades higher and cuts industry jargon by 40%.
Pricing Comparison & PlansHigh· Verified May 30, 2026
Grammarly Plans
Free tier available
Free
FreeBest for: Ideal for individuals needing basic grammar and spelling checks to improve their writing.
- ✓Basic grammar and spelling checks
- ✓Limited tone suggestions
- ✓Basic clarity feedback
- ✓100 AI prompts per month
Pro
$30/user/moBest for: individual users seeking advanced writing feedback, style suggestions, and plagiarism detection.
- ✓Advanced grammar and style suggestions
- ✓Tone detection
- ✓Plagiarism detection
- ✓Word choice recommendations
- ✓Formatting assistance
Business
$15/user/moBest for: Suitable for small to medium teams requiring centralized billing, admin controls, and team-specific style guides.
- ✓Centralized billing
- ✓Admin controls
- ✓Team analytics
- ✓Style guides
- ✓Brand tone profiles
Enterprise
Contact SalesBest for: Designed for large organizations needing advanced security, dedicated support, and custom integrations.
- ✓Customized pricing
- ✓Volume discounts
- ✓Negotiated pricing
ProWritingAid Plans
Free tier available
Free
FreeBest for: The Free plan provides basic writing assistance, ideal for occasional users or those evaluating the tool's core capabilities before committing to a paid subscription.
- ✓500 word count limit
- ✓2 runs per report per day
- ✓10 Rephrases per day
- ✓3 Sparks per day
- ✓Grammar, spelling, punctuation
Premium
$30/moBest for: The Premium plan, priced at $30/mo, unlocks all advanced features and integrations, making it suitable for professionals and frequent writers needing comprehensive support.
- ✓Unlimited word count
- ✓Unlimited Rephrases
- ✓Unlimited report runs
- ✓Advanced style improvements
- ✓Chapter Critique
Lifetime
Contact SalesBest for: The Lifetime plan offers a one time purchase for permanent access to ProWritingAid
- ✓Unlimited word count
- ✓Unlimited Rephrases
- ✓Unlimited report runs
- ✓Advanced style improvements
- ✓Chapter Critique
Capability Breakdown
5 differences found across 20 standardized features
- •Grammar checking
- •Plagiarism detection
- •Tone suggestions
- •Style improvements
- •Browser extension
- •MS Office plugin
- •Mobile app
- •Team style guide
- •Grammar checker
- •Style improvements
- •200+ writing reports
- •Readability score
- •Clichés detector
- •Pacing analysis
- •Dialogue checker
- •Word explorer
- •Integrations
- •Chrome extension
- •MS Word add-in
- •Scrivener plugin
Strengths & Limitations
Evaluative strengths and weaknesses: not feature lists
- +Integrates seamlessly across browsers, desktop apps, and mobile
- +Real-time tone detection adjusts writing for specific audiences
- +Comprehensive free version covers core grammar and spelling needs
- +Style guide feature ensures brand consistency for business teams
- +Plagiarism checker compares text against billions of web pages
- −Suggestions can be overly prescriptive, stifling creative or nuanced writing styles
- −Advanced features (plagiarism, style guides) are locked behind a pricey Pro plan
- −Can occasionally misinterpret context, offering grammatically correct but nonsensical changes
- −Offline functionality is limited; requires an internet connection for full analysis
- −Generative AI features lag behind dedicated tools like Jasper or Copy.ai
- +20+ in-depth writing reports (Pacing, Dialogue, etc.)
- +Deep integration with Scrivener, a key tool for authors
- +Lifetime 'Premium' plan offers exceptional long-term value
- +Customizable style guides and term bases for consistency
- +Contextual thesaurus suggests words within your sentence
- −Free version has a strict 500-word limit per check
- −Interface can feel cluttered and overwhelming for new users
- −No dedicated mobile app for on-the-go editing
- −Generative AI features (Rephraser) are limited to Premium+ plan
- −Slower performance on very long documents (e.g., full novels)
At a Glance
Recent Price History
Grammarly removed the "Premium" plan
Plan removed · May 30, 2026
Grammarly updated "Business" from $15/mo to Custom
Price change · May 30, 2026
Grammarly added a new "Pro" plan at $30/user/mo
Plan added · May 30, 2026
ProWritingAid removed the "Teams" plan
Plan removed · May 30, 2026
ProWritingAid removed the "Premium Pro" plan
Plan removed · May 30, 2026
ProWritingAid added a new "Lifetime" plan (Custom pricing)
Plan added · May 30, 2026
ProWritingAid raised "Premium" from $10/mo to $30/mo (+200%)
Price change · May 30, 2026
Grammarly removed the "Pro" plan
Plan removed · May 21, 2026
Grammarly added a new "Business" plan at $15/mo
Plan added · May 21, 2026
ProWritingAid removed the "Premium+" plan
Plan removed · May 21, 2026
Frequently Asked Questions
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