Yes, I use the paid version of Copyscape. I like Grammarly’s plagiarism checker but it’s so tedious. It can highlight words or phrases for plagiarism that have NOTHING to do with the article or subject itself. I have one client right now who says he uses it regularly and I had to make him aware that this was a problem. He finally realized what I was saying.
Nonetheless, I do what I can and it’s all I can do.
My goal is to provide perfection, but sometimes even I miss the mark.