Grammarchecker.io Premium
Write with flawless confidence, anywhere.
Unlock unlimited paraphrasing, advanced fluency corrections, 10 custom tones, and plagiarism checking.
Best Value • Save 58%
Annual
Billed annually
$8.33/ month
Billed as one payment of $99.95 / year
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Semi-Annual
Billed every 6 months
$13.33/ month
Billed as one payment of $79.95 / 6 months
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Monthly
Billed monthly
$19.95/ month
Billed as one payment of $19.95 / month
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Compare Free vs. Premium Capabilities
Everything you need to master your professional and academic writing.
| Writing Feature | Free Plan | Premium Plan |
|---|---|---|
| Paraphraser Word Limit | 125 words per scan | Unlimited words at once |
| Paraphrasing Modes | Standard & Fluency (2 modes) | All 10 modes (Academic, Formal, Natural, Creative, etc.) |
| Synonym Slider Stop 4 (Max) | Locked 🔒 | Full 4-Stop Maximum Variation |
| Grammar & Spell Check | Basic spelling & punctuation | Advanced fluency, conciseness & tone rewrites |
| AI Content Detector | 1,200 words / scan | 6,000 words + 1-Click Humanizer |
| Plagiarism Scanner | Teaser scan (matched URLs hidden) | 100 pages / month (full source URLs & PDF report) |
| Summarizer Word Cap | 1,200 words | 6,000 words + Custom Mode |
| Processing Speed | Standard | Instant Priority High-Speed Queue |
| Tone Insights & Style Guide | Not included | Executive, Academic & Persuasive presets |
| Money-Back Guarantee | — | 100% 3-Day Money-Back Guarantee |