Grammarly

Grammarly

Free spelling, grammar and tone checks everywhere you write, plus 100 AI prompts a month.

Grammarly checks your spelling, grammar and tone as you write, in your browser, email, docs and most apps. It's for founders who write a lot of emails, proposals and posts and want fewer embarrassing typos. The free plan corrects spelling and grammar mistakes, shows your writing tone, and includes 100 AI prompts a month for generating text. Pro is £10.

What it can do for you

Catch the typo in a client email before you hit send, spot a sentence that sounds harsher than you meant, and get a quick AI draft when you're stuck. Because it works across almost every app, you get the same safety net everywhere without copying text around.

What people like

It's everywhere, and it catches the obvious mistakes reliably. For non-native English speakers and fast writers, the free checks alone are worth having.

The honest downsides

  • Suggestions are hit-and-miss. Reddit users say it has become less reliable and more focused on style. Writers warn that accepting suggestions blindly can flatten your voice or change your meaning.
  • Pushy upgrade prompts. Some Reddit users describe the free plan's upsells as intrusive.
  • Privacy. Grammarly's policy says it doesn't sell your content, but it processes everything you write where it's active. Turn it off for sensitive documents.
  • It can slow apps down. Some users report lag in the browser.

Skip it if

  • you write sensitive legal or financial documents
  • you want a tool that improves your writing, not just checks it

Alternatives

There's no better free grammar checker that we list. For rewriting rather than checking, a general AI assistant does more:

  • Claude or ChatGPT can edit a whole draft for clarity if you paste it in.

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