ProWritingAid vs Sudowrite

Tagline

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

The AI writing partner built for fiction writers to draft, describe, rewrite, and finish novels in their own voice.

Category

Pricing

Rating

Platforms

API

Open source

Description

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.

Sudowrite is an AI writing partner designed specifically for novelists and storytellers. Driven by Muse 1.5, its proprietary fiction-trained AI model, Sudowrite assists with drafting, pacing, visual story mapping, and character continuity. Key features like First Draft, Story Bible, and Describe help writers expand their narratives, overcome blockages, and build rich sensory descriptions while retaining their unique tone.

Key features

• 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

• Muse 1.5 fiction-trained AI model
• Story Bible step-by-step drafting pipeline
• Write autocomplete suggestions
• Describe tool for sensory details
• Expand tool to build out scenes
• Rewrite revision tool
• Chapter Continuity and Series Folder
• Unfiltered Muse for adult and smut scenes
• Canvas visual planning board
• Chat grounded in Story Bible info

Pros

• 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.

• Offers a free trial to let users test out features before committing to a paid plan.
• Guarantees that user writing is not used to train their AI models.
• Claims no rights or ownership over what users write or generate in the tool.
• Enables writing in almost any language, matching suggestions to the user's language.
• Allows unfiltered writing (adult/smut) without AI refusal or prompt fading.
• Keeps characters, world, and plot consistent with the built-in Story Bible.
• Users retain project access to read and edit existing work even after cancelling a paid subscription.
• Features like Describe and Expand turn flat, sparse sentences into sensory-rich narrative.

Cons

• 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.

• Requires a credit card registration to access the initial free trial.
• Requires an ongoing paid subscription to access any AI-based features.
• May fall back on English translation when using features other than Write in foreign languages.
• No public API or developer integration options are listed on the site.
• No active native mobile applications are currently offered (though mobile hiring is shown).

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

• Hobby & StudentUSD10/month
  • • Perfect for people who write for fun or for school
  • • Start Free Trial
  • • No credit card, cancel anytime
  • • Use the #1 Creative Writing AI
• ProfessionalUSD22/month
  • • Good for longer works, like a novel or screenplay
  • • Get Feedback on your work
  • • Start Free Trial
  • • No credit card, cancel anytime
• MaxUSD44/month
  • • For authors who publish multiple times a year
  • • Unused credits rollover for 12 months
  • • Start Free Trial
  • • No credit card, cancel anytime
• Enterprise—
  • • Drop us a line
• 30-Minute Personal Setup SessionUSD49/one_time
  • • Enjoy a private one-on-one session with Sudowrite staff
  • • Tailored to your needs to help you get up to speed quickly
  • • Complimentary Personal Setup Session offered on Max plan must be used within 30 days of first payment

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