Grammarly

What it does

Grammarly checks your writing as you type: spelling, grammar, clarity and tone. Its AI can also rewrite a sentence, shorten a paragraph or draft a reply.

It works in your browser, email, documents and most apps, so help appears wherever you write.

Why use it

• It catches mistakes before you hit send, everywhere you type.
• Tone suggestions help emails land the way you mean them.
• One click shortens, simplifies or formalises a passage.
• Business plans keep a whole team’s writing consistent.

How it works

1. Install the browser extension or the desktop app.
2. Write as usual: suggestions appear underlined as you type.
3. Click a suggestion to accept it, or ignore it.
4. Select a passage and ask the AI to rewrite, shorten or change its tone.

How hard is it to use?

Beginner Easy to start. You need an account, not any technical know-how.

About as easy as AI gets: install it and keep writing. The rewrite tools take a minute to discover.

What it costs

Free plan; paid plans. The free plan covers spelling and grammar. Paid plans add full-sentence rewrites, tone and more AI help, and business plans add team features.

Prices change often, so check Grammarly’s own site before you pay.

Watch out for

• Suggestions can flatten your own voice if you accept all of them.
• Turn it off in apps where you handle confidential material.

Your data

It reads what you type wherever it is switched on. You can turn it off for particular sites and apps, and business plans add admin controls.

Grammarly doesn’t offer UK data storage, so check where it keeps your data before you share anything private or about other people.