Lex vs ProWritingAid

Tagline

The AI-powered word processor designed for modern creators to write faster, clearer, and smarter.

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

Category

Pricing

Rating

Platforms

API

Open source

Description

Lex is a collaborative, minimalist word processor equipped with powerful AI editing tools. Designed for modern creators, Lex offers features like real-time collaboration, document styling, knowledge bases, and direct feedback from advanced language models—enabling writers to streamline their drafts and elevate their writing flow.

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

• AI Feedback
• Live Collaboration
• Style Guides
• Knowledge Bases
• Saved Prompts
• Version Control Rewind
• Document Sharing
• Title Ideas Generation
• Keyboard Shortcuts

• 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

• It is completely free to share and collaborate on Lex documents.
• Offers privacy protections by utilizing enterprise APIs from OpenAI, Anthropic, and TogetherAI.
• Does not use user writing to train language models and provides opt-out plans if policies change.
• Allows Pro users to access advanced LLMs such as GPT 4.1 and Claude 4 Opus & Sonnet.
• Provides instant live collaboration with one-click links and no required app downloads.
• Offers style guide training to help the AI write, draft, and edit in your specific brand voice.
• Features a 'Rewind' tool to scrub through and easily restore previous versions of documents.
• Includes a monthly subscription option with a refund policy if you decide you do not use it.

• 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

• Exact pricing details for Lex Pro and Lex Teams subscriptions are not publicly listed in the provided pages.
• The heavily requested Track Changes feature is marked as 'Coming soon' and is not yet fully released.
• Access to advanced AI models and early beta features requires an upgrade to the paid Lex Pro tier.
• To get unlimited group folder capabilities, users must pay extra for a Lex Teams subscription.
• No public developer API documentation or API keys are detailed beyond a simple heading.

• 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

• 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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