Grammarly Review
An AI-powered writing assistant that reviews spelling, grammar, punctuation, clarity, engagement, and delivery mistakes in English texts.
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- Best for
- Professionals and students who want to ensure their writing is clear, concise, and error-free.
- Pricing
- Free / £24/mo Pro (£10/mo billed annually) / £20/user/mo Business (3+ seats) Approx. GBP excl. VAT. Pro list is $30/mo monthly or $12/mo billed annually; Business is $25/seat/mo (min 3 seats). Affiliate programme available.
- Data residency
- US
- UK English
- Yes
Our in-depth review
Far more than a spell-checker now
Grammarly began as a grammar and spelling tool and has grown into a writing assistant that also rewrites, adjusts tone and generates text. Its real power is ubiquity: it works almost everywhere you type — browser, Word, Google Docs, Slack, your CMS — quietly improving clarity as you go. For most UK professionals it functions as an always-on sub-editor rather than a tool you open deliberately, which is exactly why it sticks.
Strengths
Accuracy is excellent, and with British English selected it enforces UK spelling and conventions reliably. The free tier is genuinely useful for everyday proofreading, which is rare in this market. The generative features let you highlight a paragraph and ask it to make the text more concise, more formal or better suited to a particular audience — ideal for polishing human writing rather than replacing it.
Limitations
Grammarly is not built to generate long-form content from scratch; for that you want a model like Claude or a platform like Jasper. Applied blindly, its suggestions can strip personality and over-formalise your voice, so accept changes thoughtfully. It can also be intrusive in certain web apps, and Pro costs add up across a large team.
UK data and GDPR
Grammarly stores data in the US but has GDPR transfer mechanisms in place, and a data processing agreement is available on Business plans. For sensitive documents, use the Business tier and remember that the text you check is processed in the cloud — avoid pasting highly confidential personal data.
Key features
- Real-time grammar and spell checking
- Tone adjustment suggestions
- Plagiarism detection
- Generative AI text creation and rewriting
Pros & cons
What we like
- Works universally across browsers and desktop apps
- Highly accurate grammar and style suggestions
- Excellent free tier for basic needs
What to watch
- Pro tier can be expensive for casual users
- Sometimes suggests overly formal or robotic phrasing
- Can be intrusive on certain web applications
GDPR & data residency
Where your data is processed: US
GDPR compliant. DPA available for Business plans. Data stored in US but GDPR transfer mechanisms in place.
Our verdict
We rate Grammarly 4.5 out of 5. It's best suited to professionals and students who want to ensure their writing is clear, concise, and error-free..
Visit Grammarly →Frequently asked questions
Is Grammarly free?
Yes, the free tier covers grammar, spelling and basic clarity and is genuinely useful. Pro is around £24/month at monthly billing (~£10/month billed annually) and the Business tier around £20 per seat (three seats minimum), unlocking tone, rewriting and generative features.
Does Grammarly support British English?
Yes. Set your language preference to British English and it enforces UK spelling and conventions — useful for teams that must avoid Americanised copy.
Is Grammarly safe for confidential documents?
Data is processed in the US with GDPR transfer mechanisms, and Business plans add a data processing agreement. For highly sensitive personal data, take care — the text you check is processed in the cloud.