ProWritingAid vs Squibler

Pricing, features, platforms and who each one suits — side by side.

ProWritingAid

Grammar checking, style reports and story critique for fiction writers

Free · from $10/moVisit site

SSquibler

AI writing tool that drafts novels, books and screenplays from an idea

Free · from $15.83/moVisit site

Choose ProWritingAid if…

you want the lower entry price ($10/mo vs $15.83/mo)
you work on Windows, macOS, Chrome
you're in its core audience: novelists, fiction writers

Choose Squibler if…

you're in its core audience: novelists, screenwriters

Side by side

FeatureP

ProWritingAidS Squibler

Pricing modelFreemiumFreemium

Starting price$10/mo$15.83/mo

Free plan

Free trial

API

Open source

Trains AI on your contentNo—

Data retentionAnalysed text deleted after checking; only explicitly saved documents are kept—

Security and complianceGDPR—

AI rewrites—

Tone adjustment—

Plagiarism checker—

Word/Google Docs add-in—

Custom style guide—

PlatformsWeb, Windows, macOS, ChromeWeb

CategoryGrammar & ProofreadingStory & Fiction Writing

CompanyOrpheus Technology Ltd · United Kingdom · since 2013Squibler Inc. · United States

Full feature lists

P ProWritingAid

Grammar, spelling and punctuation checker
25+ writing analysis reports
Rephrase tool for rewriting sentences
Chapter Critique and Manuscript Analysis
Virtual Beta Reader and Marketability Analysis
Story Canvas and Plot Analysis for planning
Integrations with Word, Google Docs and Scrivener
Plagiarism checker

S Squibler

Full-length book generation organized into chapters and scenes
Formatted screenplay drafts
Story outlines covering structure, pacing and character arcs
AI co-author with accept/reject suggestions
Character and setting profiles for story consistency
Images and short videos from highlighted passages
Translation into 80+ languages
Import existing drafts; export to PDF and DOCX

Their home pages

What each vendor shows first: the pitch, the plans and the sign-up.

ProWritingAid home page — P ProWritingAid · prowritingaid.com

Squibler home page — S Squibler · squibler.io

What you'd pay

The cheapest plan that fits, per month, billed yearly where the plan offers it.

Work it out for your team

People

ProWritingAidPremium$10/mo
SquiblerPlus$15.83/mo

The cheapest paid plan with a published price that fits. Custom and sales-quoted plans aren't included.

What the free plans include

ProWritingAid

Each line editing report can be run 2 times per day on 500 words of text
10 Rephrases per day
3 Sparks per day
3 Creative Nudges per day

Squibler

Free plan limits aren't published.

All plans and prices

ProWritingAid

Free$0

Premium$30/mo billed monthly, $10/mo billed yearly ($120), or $399 one-time

Premium Pro$36/mo billed monthly, $12/mo billed yearly ($144), or $699 one-time

Squibler

Free$0

Plus$15.83/mo billed annually ($29.99 list)

Pro$49.17/mo billed annually ($89.99 list)

Price changes we've recorded

We re-read each pricing page every month and log what changed.

ProWritingAid

Nov 5, 2026Starting price: none → $10/mo; Premium: USD price not shown → $30; Premium Pro: USD price not shown → $36
Nov 5, 2026Free: €0 → $0; Premium: €30/mo monthly, €10/mo billed yearly (€120), or €399 lifetime → USD price not shown; Premium Pro: €36/mo monthly, €12/mo billed yearly (€144), or €699 lifetime → USD price not shown

Squibler

No changes since we started tracking.