Grammarly
Writing and proofreading assistant for browsers and desktop apps.
Overview
Grammarly checks spelling, grammar and tone as you write. It works through apps for Windows, Mac, iOS and Android and extensions for Chrome, Safari, Edge and Firefox.
Best for
Catching mistakes in everyday writing.
Skip it if
Skip it if you want full rewrites; Claude does that better.
Pricing
Free $0. Pro $12/mo billed yearly ($144/yr); $30 monthly or $60 quarterly. 7-day free trial. Enterprise through sales. Checked Oct 14, 2026 on the official pricing page.
Pros
- Free plan you can use on desktop, mobile and tablet.
- Works in 1 million+ apps and sites, including Gmail, Outlook, Slack, Google Docs and Word.
- Free includes 100 AI prompts a month.
Cons
- Full-sentence rewrites and tone changes need Pro.
- Pro is $30 if you pay monthly; $12/mo needs a yearly plan.
How it compares
For editing and proofreading our Best pick is Grammarly, and its free plan is also our free pick. The runner-up is Claude, which is better for rewriting whole drafts.
Verdict
The easy default for catching mistakes. Start free.
Where Grammarly shows up
Alternatives
Anthropic's assistant, strong at writing and analysis.
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