Grammarly vs QuillBot for Non-Native Professionals: Which Helps More?
Grammarly vs QuillBot compared for non-native English speakers in workplace settings — what each tool does, where each fails, and which is worth paying for.
For non-native professionals writing workplace emails and messages, Grammarly is the more useful daily tool — it corrects grammar, flags tone issues, and integrates into Gmail, Slack, and Outlook. QuillBot is better for paraphrasing and rewording individual sentences, but it doesn’t correct grammar and has no tone awareness. The best approach: use Grammarly for daily writing, and QuillBot when you need alternative phrasings for a specific sentence you can’t get right.
What Each Tool Is Actually For
These tools solve different problems. Confusing them is easy because both make your English better — but they do it in completely different ways.
Grammarly is a writing assistant. It works inline, correcting errors and flagging issues as you type. It understands tone, formality, and context. It tells you when your email sounds passive-aggressive or overly apologetic. It suggests shorter, clearer alternatives to wordy phrases.
QuillBot is a paraphrasing tool. You give it a sentence or paragraph, and it rewrites it in different ways. You can control the style — more formal, more concise, more creative — and it generates multiple paraphrase options. It doesn’t correct grammar in the traditional sense; it rewrites. The rewrites are usually grammatically correct, but that’s a side effect of paraphrasing, not the primary feature.
What Non-Native Speakers Actually Need
Based on the real struggles international professionals face in workplace writing, here’s how each tool maps to those needs:
Tone uncertainty (“Does this sound rude?”) — Grammarly wins. It specifically detects tone and flags problems. QuillBot doesn’t analyze tone.
Phrase-level awkwardness (“Is this how a native speaker would say it?”) — Both help, but differently. Grammarly suggests natural alternatives inline. QuillBot gives you multiple rewrite options to choose from.
Grammar errors — Grammarly wins clearly. Article errors, wrong prepositions, subject-verb agreement — Grammarly catches these. QuillBot may fix them as part of a rewrite, but you don’t know which grammar rule was wrong or why.
Finding alternatives when you’re stuck — QuillBot wins. When you’ve written a sentence five times and it still sounds awkward, QuillBot’s paraphrase mode gives you options you hadn’t considered.
Speed — Grammarly wins. It’s always-on; you see corrections the moment you make an error. QuillBot requires copying text, switching tabs, and reviewing suggestions.
Real Example: The Same Email Through Both Tools
Your draft: “I am writing to you in order to ask if you would be able to provide me with your feedback on the document that was sent by me last week.”
Grammarly’s response:
- Flags “I am writing to you in order to” as wordy opener
- Flags passive voice (“was sent by me”)
- Tone flag: overly formal for most workplace contexts
- Suggestion: “Could you share your feedback on the document I sent last week?”
QuillBot’s response (Formal mode):
- “I am reaching out to request your feedback on the document I forwarded to you last week.”
- “I would greatly appreciate your thoughts on the document submitted last week.”
- “I am writing to inquire about your feedback regarding the document I provided last week.”
Grammarly gives you one better version and explains why it’s better. QuillBot gives you several alternatives without explaining why. Both improve the original. Grammarly’s approach teaches you; QuillBot’s gives you options.
Where QuillBot Has a Real Advantage
QuillBot’s summarizer is genuinely useful for non-native speakers who receive long, dense emails and need to quickly extract the key points. Paste the email in, get a summary. This isn’t a writing tool — it’s a comprehension tool — but it’s valuable.
QuillBot’s grammar checker (a separate feature from the paraphraser) is also decent for basic error correction. But it’s significantly less capable than Grammarly Premium for detecting complex grammar issues common in ESL writing.
Pricing Comparison
| Plan | Grammarly | QuillBot |
|---|---|---|
| Free | Basic grammar + spelling | Basic paraphrasing (125 words/input) |
| Premium | ~$12/month | ~$10/month |
| Key premium features | Tone detection, advanced clarity, style suggestions | Unlimited paraphrasing, more modes, summarizer, grammar checker |
Both tools offer free tiers. Grammarly’s free tier is enough for basic grammar checking. QuillBot’s free tier is useful but limited in how much text you can paraphrase at once.
For most non-native professionals, Grammarly Premium delivers more day-to-day value than QuillBot Premium. But if you do significant writing that involves rephrasing or adapting content — like translating ideas from your native language into natural English — QuillBot Premium is worth considering.
How to Use Both Together
The most effective workflow for non-native speakers who want maximum writing quality:
- Write your draft in your own words
- Run Grammarly to catch grammar errors and get a tone reading
- For any sentence that still feels awkward after Grammarly, paste it into QuillBot to see 3-5 alternative phrasings
- Choose the version that sounds most natural and fits your relationship with the recipient
- Final check: read the complete email aloud before sending
This workflow adds about 3–5 minutes to your most important emails and dramatically reduces the chance of tone mistakes or awkward phrasing reaching a client or executive.
The Decision: Which Should You Buy?
If you can only buy one: Grammarly Premium. It integrates into your existing tools, corrects grammar, detects tone, and provides always-on assistance. The workflow cost is zero — it works where you already write.
If you write constantly and often struggle to find the right phrasing: consider adding QuillBot. Use Grammarly as your primary tool and QuillBot as your “what’s another way to say this?” resource.
See our Grammarly review for a full breakdown, and compare with other tools in our best AI writing tools for ESL professionals roundup.
FAQ
Does QuillBot correct grammar?
QuillBot has a separate grammar checker feature, but its primary function is paraphrasing, not grammar correction. For non-native speakers who need reliable grammar correction, Grammarly is more accurate and comprehensive.
Can QuillBot detect passive voice?
QuillBot doesn’t specifically flag passive voice the way Grammarly does. When you use QuillBot’s paraphraser in “Formal” or “Fluency” mode, the output often converts passive to active — but this happens automatically without explaining the change.
Is QuillBot good for academic writing?
QuillBot is popular for academic writing because its paraphraser helps with rewording sources. However, most universities’ academic integrity policies prohibit using paraphrasing tools to rewrite source material. Check your institution’s policy before using it this way.
Which tool integrates better with email clients?
Grammarly integrates directly with Gmail, Outlook, and most browser-based email clients through its browser extension. QuillBot does not integrate into email clients — you must copy text to their website or app.
Does Grammarly fix Spanish-influenced English errors?
Yes. Grammarly is particularly good at catching errors common in Spanish-influenced English: double negatives, verb tense errors, article omission, and preposition mistakes. Tools like Grammarly can catch patterns that stem from Spanish grammar structures being applied to English.