Bottom line
Grammarly is worth it for most people who write client-facing English every week — emails, proposals, blog drafts, and LinkedIn posts. The free tier catches embarrassing typos; Premium is where tone, clarity, and rewrite suggestions start saving real editing time.
It will not replace a human editor for high-stakes brand voice, and it can sound generic if you accept every suggestion. Used as a second pass after you write, it’s excellent.
Who this is for
- Freelancers sending proposals and invoices in English
- Non-native speakers who need confidence, not just spellcheck
- Small content teams standardizing clarity before publish
How we tested
We used Grammarly Free and Premium for three weeks across Gmail, Google Docs, and the web editor on: client proposals, newsletter drafts, and support replies. We tracked accepted suggestions, false positives, and whether Premium rewrites improved clarity without flattening voice.
Free vs Premium vs Business
| Plan | Best for | What you get | Skip if |
|---|---|---|---|
| Free | Casual writing | Spelling, basic grammar | You write professionally daily |
| Premium | Most freelancers | Clarity, tone, rewrites, plagiarism checks | You already have a strong editor workflow |
| Business | Teams | Style guides, analytics, admin | You’re a solo writer |
What we liked
- Browser and Docs presence means you don’t change tools
- Tone detectors help when a reply needs to sound firm but not rude
- Clarity suggestions often shorten fluffy sentences you’d otherwise leave
- Premium rewrites are useful as options, not commandments
What frustrated us
- Occasional over-correction of intentional informal voice
- Some “clarity” edits make sentences flatter or more corporate
- Generative features can tempt you to outsource thinking you should keep
Scoring notes
| Criteria | Score | Notes |
|---|---|---|
| Accuracy on common errors | 4.7 | Excellent on typos and agreement |
| Usefulness of Premium rewrites | 4.3 | Strong on clarity; mixed on voice |
| Workflow fit for remote work | 4.6 | Lives where you already write |
| Value for money | 4.2 | Worth it if you bill for writing/comms |
Overall: 4.4 / 5
Pricing overview
Premium is typically billed monthly or annually (annual is meaningfully cheaper). Run Free for a week on real client email. If you’re still hesitating on word choice and tone daily, Premium pays for itself quickly. Business only makes sense once multiple people need shared style rules.
FAQ
Is Grammarly better than built-in Google/Microsoft checkers?
Yes for tone, clarity, and consistency across apps. Native checkers are fine for light personal mail.
Will Grammarly make my writing sound robotic?
Only if you accept everything. Review suggestions in batches and reject voice-killing edits.
Do I need it if I use ChatGPT?
Different jobs. Generative tools draft; Grammarly polishes. Many freelancers use both carefully.
Is the plagiarism checker useful?
Helpful as a sanity check on long-form content. Not a substitute for proper sourcing habits.
Our recommendation
Stay on Free if you only write occasionally. If writing is part of how you earn, try Grammarly Premium for one billing cycle and measure edit time saved on proposals and client email. Keep a short personal style list of suggestions you always reject — that’s how you keep your voice.
Keep exploring
See more independent tests in the lab, or read how scores get made.