Grammarly is excellent at what it is built for: spelling, grammar, punctuation, and broad tone. But it will happily wave through a sentence that is grammatically perfect and completely insufferable. "We should leverage our core competencies to move the needle on key deliverables" has no errors. It is also barely English. If your problem is jargon, not grammar, you need a different tool.
The gap Grammarly leaves
Grammar checkers operate at the level of correctness. They ask "is this sentence well formed?" They do not ask "is this sentence saying anything?" Corporate jargon lives in that blind spot. It is fluent, confident, and empty, which is exactly the kind of writing a grammar checker is designed to approve. Tone detection helps a little, but flagging a message as "sounding formal" is not the same as pointing at boil the ocean and telling you to say "do too much at once."
What a jargon checker does instead
A jargon-focused tool works at the level of meaning. It recognizes specific buzzwords and idioms, offers the plain-English swap for each, and scores how corporate the whole thing reads. That is the job Buzzkill does. It knows 635 specific phrases, highlights each one in your draft, and rewrites it in a click.
Buzzkill vs Grammarly
| Grammarly | Buzzkill | |
|---|---|---|
| Spelling and grammar | Yes, its core strength | No |
| Flags corporate jargon | No | Yes, 635 phrases |
| Plain-English swaps | No | Yes, one click |
| Corporate Rank score | No | Yes, Intern to Executive |
| Where it runs | Cloud | 100% in your browser |
| Sees your text | Sent to their servers | Never leaves your device |
| Price | Free tier, paid from about 12 USD per month | Free, with a one-time 7 USD upgrade |
The privacy difference
This is the part that matters more than people expect. Grammarly works by sending what you type to its servers. For personal email that is one thing. For work email, legal language, deal terms, or anything under an NDA, it is a real consideration. Buzzkill does all of its matching locally, in the page. Your draft is never transmitted, logged, or stored anywhere. That is not a setting you toggle. It is how the tool is built, because it has no server to send anything to.
Can you use both?
Yes, and most people should. They do not overlap. Grammarly catches the typo in "recieve," Buzzkill catches the synergy two words later. Run Grammarly for correctness and Buzzkill for clarity, and your writing comes out both clean and human. If you want to feel the difference first, paste anything into the Corporate Buzzword Index and watch it score the jargon in real time, no install required.