Grammarly vs ProWritingAid: Output Quality, Templates & Pricing

Compare Grammarly and ProWritingAid on writing quality, content templates, SEO features, tone control, and pricing.

Format
Head-to-head
Updated
April 4, 2026
Screenshot of Grammarly interface showing grammar suggestions
Grammarly
Screenshot of ProWritingAid interface showing writing analysis
ProWritingAid

How they compare

Feature
Grammarly
ProWritingAid
Made by Grammarly, Inc. Orpheus Technology Ltd.
Category AI Assistant AI Book Writing Office & Productivity Writing & Editing AI Editing Tools AI Grammar Checker Tools AI Writing & Content Tools Content, Media & Communication +1 more
Pricing model Free Freemium Subscription Free Freemium Subscription
Platforms Android Chrome Extension Desktop App Firefox Extension +4 more Browser Extension Desktop Google Docs Add-on Microsoft Word Add-in +1 more
Built with JavaScript Machine Learning Python JavaScript Python React
Languages English English
Based in United States United Kingdom

Greyed rows are the same for both tools.

What each one is

Grammarly

Grammarly is an AI-powered writing assistant designed to help users improve their written communication by providing real-time grammar, spelling, punctuation, and style suggestions. It integrates seamlessly with web browsers, desktop applications, and mobile devices to support writing across emails, documents, social media, and more.

Full Grammarly review

ProWritingAid

ProWritingAid is an AI-powered writing assistant designed to improve grammar, style, and readability. It offers detailed reports and suggestions to help writers polish their work, whether academic, creative, or professional. The tool integrates with popular platforms like Microsoft Word, Google Docs, and web browsers to provide real-time feedback.

Full ProWritingAid review

Key features

Grammarly

  • Real-Time Grammar and Spell Check

    Detects and corrects grammar, spelling, punctuation, and syntax errors as you write.

  • Tone Detection

    Analyzes the tone of your message to ensure it matches your intended audience and purpose.

  • Plagiarism Checker

    Compares your text against billions of web pages to detect unoriginal content.

  • Writing Style Customization

    Set goals based on audience, formality, domain, and intent to receive tailored suggestions.

  • Vocabulary Enhancement

    Offers synonym suggestions and word choice improvements to enrich your writing.

ProWritingAid

  • Grammar and Spell Checker

    Detects and corrects grammar mistakes, typos, and punctuation errors.

  • Style and Readability Reports

    Analyzes sentence length, passive voice, clichés, and readability scores.

  • Plagiarism Checker

    Compares text against billions of web pages to identify potential plagiarism.

  • Contextual Thesaurus

    Suggests synonyms based on context to improve word choice.

  • Integrations

    Works with Microsoft Word, Google Docs, Scrivener, Chrome, Firefox, and Safari.

Pricing

Plans as published by each vendor. Check the vendor site before buying — pricing changes.

Grammarly

  • Free $0/month

    Basic grammar, spelling, and punctuation checks with limited features.

  • Pro (monthly) $30/month

    Advanced grammar, style, tone, vocabulary suggestions, and plagiarism detection.

  • Pro (annual) $12/month (billed $144/year)

    Team management, centralized billing, style guides, and priority support for organizations.

  • Enterprise Custom pricing

ProWritingAid

  • Free $0/month

    Limited access with basic grammar and spelling checks.

  • Premium $20/month

    Full access to all reports, plagiarism checker, and integrations.

  • Premium Plus $24/month

    Includes plagiarism checker credits and priority support.

Strengths and trade-offs

Grammarly

Strengths

  • Accurate and comprehensive grammar and style checking
  • Easy integration with multiple platforms and apps
  • Helpful explanations for suggested corrections
  • Customizable writing goals for different contexts
  • Includes plagiarism detection in premium plans

Trade-offs

  • Premium features require subscription
  • Internet connection needed for real-time suggestions
  • Limited support for languages other than English

ProWritingAid

Strengths

  • Comprehensive writing reports covering multiple aspects
  • Integrates with popular writing platforms
  • Affordable pricing with a free tier
  • Detailed explanations help improve writing skills
  • Plagiarism checker included in premium plans

Trade-offs

  • Primarily supports English only
  • User interface can be overwhelming for beginners
  • Some advanced features require premium subscription

Who it is for

Grammarly

  • Students and educators
  • Professional writers and editors
  • Business professionals
  • Content creators and marketers
  • Non-native English speakers

ProWritingAid

  • Students and academics
  • Content marketers and bloggers
  • Authors and creative writers
  • Business professionals
  • Editors and proofreaders

What people use it for

Grammarly

  • Grammar and Spell Checking

    Automatically detect and correct grammar, spelling, and punctuation errors in real-time across various platforms.

  • Writing Style Enhancement

    Improve clarity, tone, and style of writing with suggestions tailored to different writing goals.

  • Plagiarism Detection

    Scan text against billions of web pages to identify potential plagiarism and ensure originality.

  • Professional Communication

    Enhance emails, reports, and business documents to maintain professionalism and clear communication.

  • Academic Writing Support

    Assist students and researchers in producing error-free essays, papers, and theses.

ProWritingAid

  • Academic Writing

    Helps students and researchers improve grammar, style, and clarity in essays, theses, and papers.

  • Content Creation

    Assists bloggers, marketers, and authors in refining content for readability and engagement.

  • Business Communication

    Enhances emails, reports, and proposals with professional tone and error-free language.

  • Creative Writing

    Supports fiction and non-fiction writers with style suggestions and pacing improvements.

  • Editing and Proofreading

    Provides detailed reports to identify grammar mistakes, repeated words, and sentence structure issues.

Getting started

Grammarly

  1. Install and Integrate

    Add Grammarly as a browser extension, desktop app, or mobile keyboard to enable writing assistance across platforms.

  2. Write or Upload Text

    Type directly into Grammarly’s editor or upload documents for analysis.

  3. Receive Real-Time Suggestions

    Grammarly scans text instantly and highlights errors or improvements with explanations.

  4. Apply Corrections and Adjustments

    Accept or ignore suggestions to refine your writing according to your style preferences.

ProWritingAid

  1. Upload or Write Text

    Users can paste text into the web editor or write directly within supported platforms.

  2. Run Analysis

    The tool scans the text for grammar, style, readability, and plagiarism issues.

  3. Review Suggestions

    Users receive detailed reports with explanations and can accept or reject corrections.

  4. Improve and Export

    After applying changes, users can export the polished text or continue editing.

Common questions

Yes, Grammarly offers a free version with basic grammar and spelling checks. Premium plans unlock advanced features.

Yes, it offers detailed explanations and suggestions that help non-native speakers improve their writing skills.

Grammarly requires an internet connection to process text and provide suggestions.

ProWritingAid primarily works online, but desktop apps allow some offline editing with syncing when reconnected.

Yes, plagiarism detection is available in the Premium and Business plans.

Yes, it offers an add-in for Microsoft Word on Windows and Mac.

Grammarly supports web browsers, desktop apps for Windows and Mac, Microsoft Office add-ins, and mobile apps for iOS and Android.

It compares your text against billions of web pages and academic databases to provide reliable plagiarism detection.

Share Grammarly vs ProWritingAid: Output Quality, Templates & Pricing: