⚠️ Affiliate Disclosure: This post is not an affiliate associated review. It may become one in the future and this disclosure will reflect that. This does not affect my reviews and I only recommend tools I genuinely believe in.
Grammarly and QuillBot both fix your writing, but they solve different problems. Grammarly corrects what is wrong; QuillBot rewrites what is clumsy. Knowing which you actually need saves you paying for both.
Grammarly vs QuillBot
Quick Verdict
Choose Grammarly if: you want errors caught everywhere you type, across every app, all day.
Choose QuillBot if: you have written something and want it reworded, shortened or simplified.
They are complements, not competitors. If you only pay for one, pick based on whether your problem is errors or phrasing.
Feature Comparison
| Grammarly | QuillBot | |
|---|---|---|
| Main job | Catching errors as you write | Rewriting what you have written |
| Works across apps | Yes — browser, desktop, mobile | Mainly in its own editor and extension |
| Rephrasing | Basic suggestions | Core strength, multiple modes |
| Summarising | Limited | Yes |
| Free tier | Yes, generous | Yes, with word limits |
| Entry paid plan | From around $12/mo | From around $10/mo |
| Our score | 8.7/10 | 8.6/10 |
Who Should Choose Grammarly?
Grammarly is a correction layer that follows you around — email, documents, browser, phone. It catches spelling, grammar, punctuation and tone issues as you write, without you asking.
For professionals whose writing carries reputational weight — client emails, proposals, reports — that always-on safety net is the value.
- You want catching errors across every app
- You write a lot of professional correspondence
- You want tone suggestions as well as corrections
- You value the browser extension
Who Should Choose QuillBot?
QuillBot is a rewriting tool. You give it a sentence or a paragraph and it produces alternatives — more formal, more concise, simpler, or just different.
It is the better tool for adapting existing text: cutting a proposal down, adjusting reading level, or unpicking a sentence you have rewritten four times and still hate.
- You need to rephrase or shorten existing text
- You are adapting content to different reading levels
- You want a summariser as well as a rewriter
- You write in bursts rather than all day
Our Verdict
These two get compared constantly, and the comparison is slightly false. Grammarly is a proofreader; QuillBot is an editor. Asking which is better is like asking whether a spellchecker beats a thesaurus.
If your writing is broadly fine but you make typos and want a safety net across every app, Grammarly earns its subscription. If your writing is technically correct but wordy, repetitive or pitched wrong, QuillBot fixes the thing Grammarly cannot.
Both free tiers are usable. Run them side by side for a fortnight on your actual work and it will be obvious which one you keep reaching for.
Both tools are tested hands-on and scored on the same criteria. See how we test and score.
How We Compared Grammarly and QuillBot
Both tools went through our full review process: signed up, used on real work, and scored on the same four criteria — Grammarly 8.5/10 and QuillBot 8.5/10. Every claim in this comparison traces back to those hands-on tests.
Grammarly vs QuillBot: Frequently Asked Questions
Is Grammarly or QuillBot better?
They tied at 8.5/10 in our testing because they do different jobs. Grammarly corrects what is wrong — errors, tone, clarity — everywhere you type. QuillBot rewrites what is clumsy, with paraphrasing as its core strength. Decide which problem you actually have.
Do you need both Grammarly and QuillBot?
Most people need one. If your drafts are basically sound and need polishing, Grammarly. If you regularly rewrite and rephrase — students, ESL writers, content recyclers — QuillBot. The overlap grows every year, but each is still clearly better at its home job.
Is QuillBot a Grammarly replacement?
Only if paraphrasing is the point. QuillBot’s grammar checking is decent but Grammarly’s is the most dependable we have tested, and Grammarly’s everywhere-you-type integration is the habit-former QuillBot lacks.
Read the Full Reviews
More from WhatAITools: Jasper AI review, Writesonic review and all AI writing tool reviews.
James is an SEO and content specialist with over 12 years’ experience, and tests AI tools so everyday people don’t have to. WhatAITools.co.uk covers honest, no-jargon reviews to help you find the right tool for your needs.
Leave a Reply