Does anybody know 'clearedits'?

I heard of 'clearedits', a software, from my friend. It is said that this software can help us improve business and professional writing.

Does anybody know if it is very good software or not, and where we can download it free? I know, many universities are equiped with this software.

thanks a lot.

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get clearedits website and download
Based on time-tested techniques for improving business writing and professional writing, ClearEdits helps writers learn while they work        
clearedits 提高企業和專業寫作