Grammarly vs ProWritingAid

At a glance

Both have a free plan.
Grammarly offers a free trial (7 days). We haven't confirmed one for ProWritingAid.
Grammarly's lowest paid plan is Pro at $12 per member per month, billed annually, as of October 19, 2026.
ProWritingAid's lowest paid plan is Premium at $10 per month, billed yearly at $120, as of October 20, 2026.
Both are available on Windows and macOS.
Only Grammarly lists iOS and Android.
Only ProWritingAid lists Web, Chrome extension, Edge and Firefox.
Both work with Google Docs.
Only Grammarly lists SOC 2 and SSO.
Only ProWritingAid lists GDPR.
Grammarly has a public API. We haven't confirmed one for ProWritingAid.

From each tool's own website, checked on the dates below, and from published reviews.

Which to choose

From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.

Choose Grammarly if you need

iOS or Android. We haven't found them on ProWritingAid's website.
Integration with MS Office, Chrome or Safari. We haven't found them on ProWritingAid's website.
SOC 2 or SSO. We haven't found them on ProWritingAid's website.

Choose ProWritingAid if you need

Web, Chrome extension, Edge or Firefox. We haven't found them on Grammarly's website.
Integration with Microsoft Word, Scrivener or Apple Pages. We haven't found them on Grammarly's website.
GDPR. We haven't found it on Grammarly's website.

Grammarly

No reviews yet

Nobody has reviewed Grammarly yet. Its rating shows once it has 3 reviews.

Review Grammarly

ProWritingAid

No reviews yet

Nobody has reviewed ProWritingAid yet. Its rating shows once it has 3 reviews.

Review ProWritingAid

The facts

What it does: GrammarlyPersonalized AI writing guidance and text generation on any app or website; ProWritingAidPlan, write, edit, and publish with the complete toolkit for storytellers
Free plan: GrammarlyYes; ProWritingAidYes
Pricing: GrammarlyPer member, monthly; ProWritingAidMonthly, yearly or lifetime
Paid plans from

What they share

From the platforms and integrations each website lists.

Platforms

Both

Windows
macOS

Only Grammarly

iOS
Android

Only ProWritingAid

Web
Chrome extension
Edge
Firefox

Integrations

Both

People who switched

Reviewers who say they used one of these before the other.

No reviewer has said they moved between Grammarly and ProWritingAid yet.

Used either of them?

Your review makes this comparison better for the next person. Review Grammarly or review ProWritingAid.

At a glance

Both have a free plan.

Grammarly offers a free trial (7 days). We haven't confirmed one for ProWritingAid.

Grammarly's lowest paid plan is Pro at $12 per member per month, billed annually, as of October 19, 2026.

ProWritingAid's lowest paid plan is Premium at $10 per month, billed yearly at $120, as of October 20, 2026.

Both are available on Windows and macOS.

Only Grammarly lists iOS and Android.

Only ProWritingAid lists Web, Chrome extension, Edge and Firefox.

Both work with Google Docs.

Only Grammarly lists SOC 2 and SSO.

Only ProWritingAid lists GDPR.

Grammarly has a public API. We haven't confirmed one for ProWritingAid.

From each tool's own website, checked on the dates below, and from published reviews.

The facts

What it does: GrammarlyPersonalized AI writing guidance and text generation on any app or website; ProWritingAidPlan, write, edit, and publish with the complete toolkit for storytellers
Free plan: GrammarlyYes; ProWritingAidYes
Pricing: GrammarlyPer member, monthly; ProWritingAidMonthly, yearly or lifetime
Paid plans from