Overview

ProWritingAid combines line editing, rephrasing and writing analysis reports, with features aimed at both everyday editing and longer creative work. Premium adds document sharing and real-time comments, while the paid tiers also support documents of any length. The trade-off is narrow language coverage: it works only with English, though it supports general, British, US, Australian and Canadian varieties.

Its security practices may matter to writers handling private drafts: text entered in the editor is not retained on processing servers, data is encrypted in transit, and uploaded documents are accessible only to the account owner. The service says it does not use user text to train algorithms.

Key features

Editing and reports

Style suggestions, rephrasing and daily Sparks and Creative Nudges give writers several ways to revise or generate ideas. Premium includes more than 25 writing analysis reports, which makes it better suited to users who want feedback beyond basic line edits. The free plan's 500-word run limit makes it less practical for reviewing a full chapter in one pass.

Plagiarism and collaboration

The plagiarism checker compares writing against more than one billion webpages, published works and academic papers. Premium's document sharing and real-time comments make it more useful for collaborative editing than a standalone checker, though those features sit behind a paid plan.

Writing environment

ProWritingAid works in Word, Google Docs, Scrivener, Chrome, Firefox and Edge, with browser extensions for Chrome, Firefox and Edge, plus a desktop editor. That range suits writers moving between documents and browsers. There is no mobile app, so it is a weaker fit for editing primarily on a phone or tablet.

Pricing

ProWritingAid is freemium. The Free plan costs 0.00 USD per free and allows 500 words per report run, two report runs per day, 10 rephrases, three Sparks and three Creative Nudges daily. It is a useful way to try the workflow, but the word and usage caps will constrain regular editing.

Premium is 30.00 USD per month, billed monthly. It includes one Chapter Critique per day, five Sparks and nine Creative Nudges per day; Premium also includes document sharing, real-time comments and 25+ writing analysis reports. Premium Pro is 36.00 USD per month, billed monthly, and raises those daily allowances to 30 Chapter Critiques, 50 Sparks and 15 Creative Nudges. Both paid tiers support documents of any length, making them the more suitable options for long manuscripts; Pro's higher quotas are aimed at writers who will use those tools intensively.

Premium Monthly and Premium Pro Monthly have custom pricing. Premium Yearly is billed at ₹550.00 per month, billed yearly, and Premium Pro Yearly at ₹660.00 per month, billed yearly; both include a three-day money-back guarantee. Premium Lifetime has custom pricing and the same three-day guarantee. Yearly and lifetime plans may be refunded within three days; monthly plans are not refundable. Subscriptions can be canceled anytime and remain active until the renewal date.

Platforms

Use ProWritingAid through its desktop editor, supported browser extensions, or integrations with Word, Google Docs and Scrivener. The lack of a mobile app limits its usefulness for writers who need to edit on the go.

Who it's for

ProWritingAid is a strong fit for English-language writers who want style suggestions and deeper analysis in their existing desktop or browser workflow. Authors drafting long documents will benefit most from paid access, while writers editing only short passages may find the free tier enough if they can work within its daily limits. It is not the right choice for multilingual writing or mobile-first editing.

Pros and cons

Pros: Paid plans support documents of any length, avoiding the free tier's 500-word run ceiling.
Pros: Word, Google Docs, Scrivener and three browser integrations let writers use it across common desktop workflows.
Pros: Premium combines 25+ analysis reports with sharing and real-time comments, useful for writers seeking detailed feedback or collaboration.
Cons: Free usage is limited by both word count and daily quotas, so frequent editors may need to pay.
Cons: English is the only supported language, limiting its value for multilingual writers.
Cons: There is no mobile app, and monthly plans are not refundable.

Alternatives

For a focused readability tool rather than a broad writing assistant, consider Readability Formulas, which offers free calculators and a Readability Scoring System, with platforms spanning extension, macOS, web and Windows. TextGears is a better fit for web or API workflows that need unlimited checks, translations and long-text paraphrases: its PRO plan starts at $2.48 per month and includes custom dictionary rules and an option not to store texts.

Check Readability suits readers who want a free web or extension option with no account or usage fees. Text Inspector is worth considering for web or API readability analysis: its free plan covers 250 words and automatically deletes data after six hours.

For a free web checker that needs no signup and can work offline after loading, choose AnchorKite Readability Checker. Delimiter Readability Checker is another free web option, with no account requirement or paywall. Hemingway Editor is an alternative for users choosing among macOS, web and Windows editing options; its Individual 5K annual plan costs 8.33 USD per month, billed $100 billed annually, for 5,000 AI sentences per month. Slick Write is a free web alternative with submissions up to 200,000 characters.

For category comparisons, browse Grammar checkers, AI Grammar Checkers, Readability Checkers, Writing Style Checkers and AI writing assistants.

Verdict

Choose ProWritingAid if you write in English, work mainly on desktop or browser, and want style analysis that can handle long documents. Its broad writing integrations and paid-plan reports are the main reasons to pick it; look elsewhere if you need mobile editing, other languages, or generous free use.

	ProWritingAid	SpellBoy
Free plan	Yes	No
Free trial	No	No
Paid from	$10/mo	—
Open source	No	No
Platforms	extension	Web
Free plan	Yes	Yes
Paid from	$550/user/mo	—
Browser extension	Yes	—
Desktop app	Yes	—
Mobile app	No	—
Style suggestions	Yes	—
Languages supported	1	—

ProWritingAid vs SpellBoy

ProWritingAid

SpellBoy