Grammarly vs ProWritingAid Comparison 2026
Grammarly checks spelling, grammar and tone as you type, with a free tier good for captions, emails and descriptions, then Pro is $12 a month for rewrites and plagiarism detection. ProWritingAid reports on pacing, repeated phrasing and dialogue tags across a whole manuscript, which Grammarly does not attempt, but the free account only checks 500 words at a time, ruling out the long-document reports that are the point of it. Annualised, Grammarly Pro runs $144 a year against ProWritingAid Premium's $120, though Premium Pro matches Grammarly exactly at $144.
The second pair of eyes on everything you write
Style and grammar checks for long drafts
At a glance
- ProWritingAid starts cheaper, at $10.
- Both have a genuinely free tier.
Side by side
Grammarly | ProWritingAid | |
|---|---|---|
| Starting price (they differ) | From $12 | From $10 |
| Pricing model | Free plan, paid tiers | Free plan, paid tiers |
| Free tier | Yes | Yes |
| Billing | Monthly or annual | Monthly or annual |
| Free trial | 7 days | Not stated |
| API | Not stated |
Grammarly
The second pair of eyes on everything you write
Grammarly catches the mistakes that get noticed in a sponsor email or a video description, and it does it inside whatever box you are typing in rather than in a separate app. The free tier covers spelling, grammar and tone. Rewriting, plagiarism detection and the larger prompt allowance sit behind Pro.
ProWritingAid
Style and grammar checks for long drafts
ProWritingAid reports on a whole manuscript rather than a sentence, with checks for pacing, repeated phrasing, sticky sentences and dialogue tags that Grammarly does not attempt. The reports take a while to read and are worth it once. Free accounts are limited to 500 words at a time, which rules out the long-document work the tool is best at.
Why people weigh these two
- ProWritingAid instead of Grammarly
- ProWritingAid does the same grammar and style checking with a slant toward long drafts, and its paid plan starts at $10 a month, a little under Grammarly's $12, with a free tier of its own.
- Grammarly instead of ProWritingAid
- Grammarly catches everyday sentence errors across anything you write, but skips the pacing and dialogue-tag checks ProWritingAid runs on a full manuscript. Short posts are where Grammarly wins.
Which one should you pick
Pick Grammarly if you are writing in public in short bursts, descriptions, emails, video scripts, and want mistakes caught before a sponsor or a viewer screenshots them. The free tier is genuinely useful on its own, and Pro at $12 a month, $144 a year, adds full-sentence rewrites and plagiarism detection after a 7-day trial.
Pick ProWritingAid if you are editing a long draft, particularly fiction, and want structural feedback on pacing and repetition rather than correctness alone. Premium is $120 a year when billed yearly, cheaper than Grammarly's annual total, but the free account's 500-word check limit rules out exactly the manuscript-level reports the tool is built for, so budget for Premium from the start if the work is long.
Common questions
- Which is cheaper over a year?
- ProWritingAid's Premium plan, at $120 a year billed yearly, against Grammarly Pro's $12 a month, which comes to $144 a year. ProWritingAid's Premium Pro tier, with larger story-credit discounts, costs $144 a year too, exactly matching Grammarly.
- Can ProWritingAid's free plan handle a full manuscript?
- No. It checks only 500 words at a time, which rules out the long-document reports on pacing, repeated phrasing and dialogue tags that are the actual point of the tool. Grammarly's free tier has no equivalent per-check word limit, only a 100-prompt monthly cap on its AI features.
- Does Grammarly give structural feedback like ProWritingAid does?
- No, its listing describes spelling, grammar, tone and full-sentence rewrites, not pacing or manuscript-level structure. ProWritingAid's reports on a whole book are what Grammarly does not attempt, according to its own listing.
- Is ProWritingAid's headline price available without an annual commitment?
- Not at the stated rate. The $10 and $12 monthly-equivalent prices require yearly billing, and monthly billing is offered at a meaningfully higher rate, with the yearly saving stated at 67 percent. Grammarly's $12-a-month Pro price is not described as requiring an annual commitment.
Ratings are the average of reviews readers left. The facts are stated by each tool’s own listing and are not verified by CloutStack. How we make money.