You can use the primary Grammarly tool for free. If you want to supercharge your writing processes, you can go for an upgrade for around $30 per month. Grammarly Premium checks for over 250 types of grammatical errors, detects plagiarism and provides citation suggestions.

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Apart from checking your text for errors, WhiteSmoke will also generate a report that will review and rate your writing. Rating is judged in six different categories: sentence structure, words, expressions, voice, length, and redundancy. Not only can you correct your texts, but it will also give you suggestions on where your writing needs improvement.