Why it's a strong pick

ProWritingAid does more than fix typos. Its own extension page says it offers a grammar checker, style improvements and 25+ in-depth writing reports. That suits people who edit their own long drafts. The trade-off: the free plan is small. It caps document length, so you will hit the limit fast on a chapter or an essay.

What it does

ProWritingAid checks grammar and style as you write. Its Chrome extension works in Google Docs, Notion, Atticus, Campfire and, in its words, "hundreds of other sites". It also works on Gmail and LinkedIn. The writing reports go past single errors and look at your whole draft, so you can see patterns you would miss line by line.

Key features

Grammar and style checker. Fixes errors and suggests style changes as you write.
25+ writing reports. In-depth reports on the whole text, not only single sentences.
Works on many sites. Google Docs, Notion, Atticus, Campfire, Gmail and LinkedIn, plus other sites the vendor lists.
Free plan with clear limits. The vendor's help center lists limits on document length, runs per report and daily Sparks. Check its current limits.
Paid plans remove the word limit. Premium and Premium Pro are unlimited on words. Check the current plans on its site.
Documents saved in the Web Editor. The vendor says it stores these encrypted in the cloud.

Who it's for

ProWritingAid fits writers who edit long drafts and want a report on the whole text, not only a fix for each line. It is a weaker fit if you only need quick corrections in short emails. For that, try Grammarly or LanguageTool.

What is the difference between the free and paid plans?

The free plan has limits on document length, runs per report and daily Sparks, per ProWritingAid's help center. Premium and Premium Pro remove the word limit. The vendor changes plan details and prices, so read its plan page for the current limits before you decide. We list no prices here.

Where does ProWritingAid send my text?

Your text goes to ProWritingAid's servers to be checked. Its help center says text is kept only for the seconds needed to process it, then removed. The exception is documents you save in the Web Editor, which it keeps encrypted in the cloud. Read its privacy page for the full terms.

It also says it never uses your writing to train its AI.

What permissions does ProWritingAid ask for?

We did not confirm the exact permission list, so check the install prompt before you add it. A writing tool must read the text on the pages where you use it. That is the normal reason for broad access. Permissions can change between releases, so check again after updates.

Does ProWritingAid work in Google Docs?

Yes. ProWritingAid's extension page names Google Docs, along with Notion, Atticus and Campfire, and says it works on hundreds of other sites. It also works on Gmail and LinkedIn. We have not tested every site, so try it on the page you care about.

FAQ

Is ProWritingAid free? There is a free plan with limits on document length and runs per report. Paid plans lift the word limit.

Who makes ProWritingAid? Orpheus Technology Limited. The founder is Chris Banks and the company started in London in 2013. It says it has taken no venture capital.

Does it use my writing to train AI? ProWritingAid says it does not. That is the vendor's statement, so read its privacy page.

Good to know

The document-length cap on the free plan is the main limit. Try a short test paragraph first to see if the reports help you. If they do, check the paid plans before you paste in a long draft.

Other grammar checkers to compare

ProWritingAid is one of 8 picks in our Grammar Checkers guide, which compares them side by side and explains how to choose. The other picks:

Grammarly: Grammar, spelling, punctuation and tone suggestions as you write in Chrome. A free plan and a paid Pro plan.
LanguageTool: A grammar and style checker for 25+ languages. The browser extension needs a paid Premium plan.
QuillBot: A grammar checker and paraphraser in one extension. Free plan, paid Premium. Read the privacy settings first.
Wordtune: A rewrite-first writing tool from AI21 Labs. Free Basic plan with daily limits, paid plans above it.
Sapling: Grammar, rephrasing and autocomplete aimed at work messages. Free plan, paid Pro and team plans.
Ginger: Checks spelling and grammar as you type. A free plan with limits, and a paid Premium plan.
Harper: A free, open-source grammar checker that does its work offline in your browser.

See alternatives: Grammarly alternatives

Also see: Best Chrome extensions for students