Sentence Checker
Sentence Checker: A broad free checker for everyday English corrections, tone, and sentence structure. Ranked #27 of 88 in Grammar Checkers by our editors (6.0/10); pricing: Free plan; best for basic web correction with tone checks.
At a glance
- Editor score6.0 / 10
- PricingFree plan
- Best forBasic web correction with tone checks
- Free planYes
- Tone detectionYes
- Facts checked21 Sep 2026
Where it wins
- Free plan includes grammar, spelling, and punctuation checks
- Checks sentence structure, word choice, passive voice, and tone
- Chrome extension supports checking in online documents
Where it doesn't
- Premium adds advanced capabilities without detailed feature breakdown
- Platform coverage is centered on web and Chrome
- Plagiarism checking is included without further scope details
Our verdict on Sentence Checker
Sentence Checker is a web-based writing tool for students, teachers, journalists, authors, researchers, lawyers, and other writers. It accepts pasted text, highlights potential issues, and provides correction suggestions across grammar, spelling, punctuation, sentence structure, word choice, and parts of speech. The tool also covers fragments, run-on sentences, passive voice, plagiarism, and tone. Its free plan makes it suitable for people who want basic English correction without committing to a paid tier, while the Chrome extension extends checking to online documents.
The published plans show a Free tier with grammar checking, spelling and punctuation checking, and unlimited checks stated on the site. A Premium tier adds advanced features and capabilities, but the plan description does not break those additions into a detailed feature list. For buyers comparing paid writing tools, the free plan is the clearest fit when core correction is the priority. Premium may suit users who want broader capabilities, but its value depends on which advanced functions matter to their workflow.
Sentence Checker’s main strength is breadth within basic writing correction: it combines mechanical checks with sentence structure, word choice, passive-voice, plagiarism, and tone detection. Its AI features may support these correction and analysis functions, while multiple English variants are also described. The product is a practical choice for web-based writing and document review, especially when tone feedback and a browser extension are useful. Writers needing a narrowly defined workflow beyond the web and Chrome, or a more fully detailed paid offering, should compare alternatives before choosing it.
Your product? Our editors can test Sentence Checker in depth and publish a review, labelled as paid · from $149/mo →
Sentence Checker pricing
All 2 Sentence Checker plans and prices →
Sentence Checker fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Browser extension | Yes |
| Desktop app | Not verified |
| Mobile app | Not verified |
| Style suggestions | Yes |
| Tone detection | Yes |
| Languages supported | Not verified |
| Deployment | Cloud, Browser extension |
| Platforms | Web, Chrome extension |
| Built for | Solo, Small business, Mid-market (editorial estimate) |
| Pricing | Free plan (source) |
| Website | sentencechecker.org |
| Facts checked | 21 Sep 2026 |
Alternatives to Sentence Checker
- GrammarlyA broad writing assistant with strong grammar, tone, rewriting, and AI coverage.9.4
- LanguageToolA broad multilingual checker with open-source and self-hosting options.9.2
- Microsoft EditorA strong Microsoft 365 writing assistant with focused platform coverage.9.0
See all Sentence Checker alternatives →
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Featured on iTechGuides
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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