SentenceCheckup
SentenceCheckup: A free browser checker for sentence-level corrections and separate rewriting tools. Ranked #29 of 30 in Proofreading Software by our editors (6.4/10); pricing: Free plan; best for free browser-based sentence correction.
At a glance
- Editor score6.4 / 10
- PricingFree plan
- Best forFree browser-based sentence correction
- Free planYes
- Paid fromFree
- Facts checked24 Sep 2026
Where it wins
- Checks grammar, spelling, punctuation, run-ons, and sentence fragments
- Highlights issues and offers suggestions with individual or one-action fixes
- Includes separate tools to rewrite, expand, shorten, and count sentences
Where it doesn't
- Works in a browser rather than as a desktop or mobile app
- No browser extension for checking text outside its editor
- No team features or offline mode
Our verdict on SentenceCheckup
SentenceCheckup is a free, browser-based proofreading tool for students, writers, and professionals who need to check English sentences in blog posts, academic papers, or essays. Paste text into its editor to check grammar, spelling, punctuation, run-on sentences, and sentence fragments. The editor highlights mistakes and shows correction suggestions; users can apply fixes one by one or in one action. The vendor says the tool does not require sign-up, making it suitable for occasional sentence-level checking without a paid plan.
Its scope goes beyond basic correction, but remains sentence-focused. Separate tools handle rewriting, expanding, shortening, and counting sentences, while the checker mentions advanced suggestions for style issues. These tools can help when a draft needs a quick pass or a sentence needs a different length or phrasing. They are distinct functions rather than evidence of a broader document workflow: the product is accessed on the web, and the available platform coverage does not extend beyond the browser. It may suit solo writers and small-scale work better than a team process.
The free offering is the product's central proposition; there are no paid tiers to compare in the published description. Support is offered by email and phone. The trade-off is limited fit for ongoing proofreading across apps: SentenceCheckup has no browser extension, team features, or offline mode. Choose it for free checks and sentence tools in a browser; consider another option if you need collaborative review, desktop coverage, or proofreading outside a web editor.
Your product? Our editors can test SentenceCheckup in depth and publish a review, labelled as paid · from $149/mo →
SentenceCheckup pricing
SentenceCheckup fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Supported languages | Not verified |
| Browser extension | No |
| Document integrations | Not verified |
| Style and tone suggestions | Yes |
| Team features | No |
| Offline mode | No |
| Deployment | Cloud |
| Platforms | Web |
| Support | Email, Phone |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | sentencecheckup.com |
| Facts checked | 24 Sep 2026 |
Alternatives to SentenceCheckup
- GrammarlyA broad writing assistant with free checks and paid rewrites, detection, and team controls.9.4
- LanguageToolA flexible proofreading assistant for multilingual writing, with free and Premium plans.9.2
- DeepL WriteA flexible proofreading assistant for style and phrasing across devices.9.0
See all SentenceCheckup alternatives →
Used SentenceCheckup? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used SentenceCheckup for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
SentenceCheckup is listed in our Proofreading Software directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/sentencecheckup/"><img src="https://www.itechguides.com/best/badge/sentencecheckup.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update