Grammarly
Our verdict · The tool to reach for when you write your own copy but want it tightened and error-free.
Choose it if
Works everywhere you write, from browser to email to desktop
Skip it if
An editor, not a drafting tool — it won't generate content from scratch as capably
Where to get it
Grammarly
From ~£10/month (indicative — check current pricing; billed annually)
Indicative price at the time of review.
Grammarly earns its place not by writing for you but by making what you write better. It flags grammar, clarity, conciseness and tone issues as you type, and its paid tier adds AI rewriting, tone adjustment, a plagiarism checker and AI-text detection. For content creators who prefer to draft in their own voice, it is a useful safety net — catching the errors and flabby sentences that erode credibility, and offering brand-tone profiles and snippets for consistency. It is not a substitute for a generative drafting tool, so treat its suggestions as prompts rather than orders.
The good & the bad
Pros
- Works everywhere you write, from browser to email to desktop
- Reliable at catching grammar, clarity and conciseness problems
- Paid tier adds AI rewriting, tone tuning and plagiarism checks
Cons
- An editor, not a drafting tool — it won't generate content from scratch as capably
- Suggestions can flatten intentional voice if accepted uncritically
How it compares
| Pick | WATTB Score | Price | Best for |
|---|---|---|---|
| 1.Jasper | 94/100 | From ~£30/month (indicative — check current pricing; billed annually) | overall |
| 2.ChatGPT Plus | 92/100 | From ~£16/month (indicative — check current pricing) | all-rounder |
| 3.GrammarlyThis pick | 90/100 | From ~£10/month (indicative — check current pricing; billed annually) | editing and polish |
| 4.Surfer SEO | 86/100 | From ~£39/month (indicative — check current pricing) | SEO content |
| 5.Copy.ai | 82/100 | From ~£19/month (indicative — check current pricing; billed annually) | marketing workflows |
Good to know
- Price
- From ~£10/month (indicative — check current pricing; billed annually)
- Best for
- Editing, proofreading and polishing your own writing
- Coverage
- Browser, desktop and email integrations
- Paid extras
- AI rewrites, tone tuning, plagiarism checker
- Consistency
- Brand tones, style guides and snippets
- Entry price
- Pro from ~£10/month (indicative — check current pricing; annual billing); free checker available
Researched by WATTB
- Published
- 31 August 2026
- Updated
- 31 August 2026
- Last verified
- 31 August 2026
- Sources
- 1 source
We research and rank options from public data, official information and published reviews. How we research →
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