Xue Xin. Both com and PaperYY are reliable duplicate checking systems. But which is more accurate may depend on personal use and the field and content of the paper. It is suggested to use a variety of duplicate checking tools for detection, so as to evaluate the repetition rate of papers more accurately. Free paper duplicate checking, such as paperfree and papertime, is a reliable duplicate checking software in junior high school. Several duplicate checking systems can be used to ensure the accuracy of duplicate checking rate.

Some users think that the duplicate checking result of PaperYY is slightly higher than that of Xue Xin. However, some users think that there is little difference between the two. Therefore, if accurate duplicate checking rate is needed, it is best to use the duplicate checking system provided by schools or institutions for testing.

In short, when choosing duplicate checking tools, we should choose them according to personal needs and actual conditions, and at the same time, we should use a variety of tools to detect them, so as to evaluate the repetition rate of papers more accurately.