Grammarly vs ProWritingAid

Tagline

AI writing assistant for grammar, tone, and clarity

The Storyteller's Toolkit: A grammar checker, style editor, and writing mentor in one package.

Category

Pricing

Rating

Platforms

API

Open source

Description

Grammarly checks grammar, rewrites sentences, and generates drafts across every app.

ProWritingAid is a comprehensive writing assistant and developmental editor designed for storytellers and writers. It offers grammar checking, style editing, paraphrasing, and deep manuscript analysis. The platform helps writers refine their plots, bring characters to life, get virtual beta feedback, and edit chapters natively inside popular writing applications.

Key features

• Citation manager
• Outline mode
• Focus mode

• Grammar Checker
• Paraphrasing Tool
• Manuscript Analysis
• Plot Analysis
• Character Analysis
• Virtual Beta Reader
• Chapter Critique
• Marketability Analysis
• Story Canvas
• Write Mode
• Sparks Content Suggestions
• 25+ Writing Reports

Pros

• Real-time grammar checking
• Tone detection
• Plagiarism detection
• Rewriting suggestions
• Works across nearly every app
• Chrome, Edge, Word, Docs support
• Generative AI writing (GrammarlyGO)
• Enterprise security and SSO

• Integrates directly into favorite writing apps like Microsoft Word, Google Docs, and Scrivener.
• Protects your privacy with bank-level security and guarantees never to use your text to train its algorithms.
• Generates over 25+ comprehensive reports analyzing cliches, overused words, structure, and pacing.
• Capable of analyzing long-form manuscripts of up to 300,000 words in just minutes.
• Features a Virtual Beta Reader that provides modeled first-person reader reactions and emotional high/low maps.
• Analyzes story arcs and plot holes automatically against standard structures like the Three Act Structure.
• Offers Sparks Edit and Sparks Inspire tools to help rewrite passages and break through writer's block.
• Allows adding new dictionary terms and creating customizable, personal grammar and style rules.

Cons

• Free tier is limited
• Sometimes over-corrects
• Style suggestions can feel generic
• Weak on creative nuance
• Chrome extension is resource-heavy
• Weak on technical jargon
• Business plan is pricey
• Only English is fully supported

• The free plan is subject to a strict 500 word count limit.
• Refunds are not available under any circumstances for monthly paid subscription plans.
• Refund requests for yearly or lifetime paid plans must be made within a tight three-day window of purchase.
• Purchased Story Credits are completely nonrefundable.
• No developer API documentation or pricing is listed on the main informational pages.
• No references to dedicated iOS or Android mobile applications are listed on the main site.

Pricing plans

• FreeEUR0/month
  • • Write without mistakes
  • • See your writing tone
  • • Generate text with AI prompts
• ProEUR12
  • • Everything in Free, plus advanced writing features
  • • Adjust your writing tone
  • • Rewrite full sentences
  • • Catch accidental plagiarism
• Enterprise—
  • • Everything in Pro, plus enterprise features
  • • Enterprise-grade privacy and security
  • • Custom roles and permissions
  • • Dedicated support

• FreeGBP0
  • • Grammar, spelling, punctuation
  • • Word Explorer & Thesaurus
  • • Document type setting
  • • 100% data security and privacy
• PremiumGBP30/month
  • • Everything in Free
  • • Unlimited word count
  • • Unlimited Rephrases
  • • Unlimited report runs
• PremiumGBP10/month
  • • Everything in Free
  • • Unlimited word count
  • • Unlimited Rephrases
  • • Unlimited report runs
• PremiumGBP399/one_time
  • • Everything in Free
  • • Unlimited word count
  • • Unlimited Rephrases
  • • Unlimited report runs
• Premium ProGBP36/month
  • • Everything in Premium
  • • Advanced style improvements
  • • Custom style guide
  • • Discount on Story Credits
• Premium ProGBP12/month
  • • Everything in Premium
  • • Advanced style improvements
  • • Custom style guide
  • • Discount on Story Credits
• Premium ProGBP699/one_time
  • • Everything in Premium
  • • Advanced style improvements
  • • Custom style guide
  • • Discount on Story Credits

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