Best Grammar Checkers for Clearer Writing
If you write daily, a grammar checker pays for itself. These are the best tools we tested for accuracy, tone, and clarity.
Updated 2026-09-01 · Tested by the QSLABX editorial team
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Grammarly
The writing assistant that fixes grammar, tone, and clarity
The standard for grammar, clarity, and tone.
- Pricing: From $12/mo
- Free trial: Free plan available
🏷️ 30% off annual · code QSLABX30
In-depth style and grammar checker for long-form writers
Deeper style reports for long-form writers.
- Pricing: From $10/mo
- Free trial: Free trial available
The classic readability checker for bold, clear prose
Best-in-class readability feedback, one-time price.
- Pricing: From $19.99 one-time
- Free trial: Free web version available
🏷️ One-time $19.99
Wordtune
AI rewriting and tone-shifting for clearer sentences
Sentence-level rewriting in different tones.
- Pricing: From $9.99/mo
- Free trial: Free plan available
How we ranked these tools
Every tool on this list was tested with the same five tasks: a short ad, a long blog intro, an email sequence, a rewrite, and a brand voice check. We score on output quality, ease of use, pricing value, brand controls, integrations, and support. Rankings are re-checked every 90 days.
Read our full methodology →📬 Free weekly newsletter
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