Rewrite This vs Grammarly
Grammarly is a writing assistant that lives in your browser and apps and flags grammar, spelling and tone issues as you type, with AI rewrite features on top. Rewrite This is a paste-and-go page: you give it the whole message and get back a full rewrite in the tone you choose, with nothing to install. Grammarly is better as an always-on spell and grammar checker. Rewrite This is better when the whole message needs to sound different, fast, especially on a work computer where you can't install extensions.
Last checked October 2026. Features and plans change; check Grammarly's own site for its current offer.
| Rewrite This | Grammarly | |
|---|---|---|
| How it works | Paste a message, get a full rewrite | Suggestions inline while you type |
| Install | Nothing. Works in any browser | Browser extension or desktop app for the full experience |
| Strength | Changing the tone of the whole message | Catching grammar, spelling and clarity issues |
| Free plan | 3 rewrites a day, no account | Free plan with core corrections and limited AI rewrites |
| Account | None | Required |
Use Rewrite This when
- You are on a locked-down work computer and can't install an extension.
- The draft is fine grammatically but sounds blunt, cold or rambling.
- You don't want to create an account for a two-second fix.
Use Grammarly when
- You want every email, doc and form checked automatically as you type.
- Spelling and grammar mistakes are the main problem, not tone.
- Your company already pays for Grammarly for your team.