PaperAsk and PaperTime are both reliable duplicate checking tools for papers, and each has its own advantages and characteristics.

The duplicate checking effect of PaperAsk is considered to be better than PaperTime, its database is more complete and its duplicate checking algorithm is relatively rigorous. In addition, PaperAsk also provides free duplicate checking, online error correction and other functions to facilitate users to modify and test papers.

PaperTime is also an accurate duplicate checking tool with perfect algorithm and database. At the same time, PaperTime also provides real-time weight check, intelligent weight reduction and other functions, which can better help users to modify and polish the paper.

Generally speaking, if you need to check the first draft and want to check the copy for free, you can try using PaperAsk or PaperTime, paperfree, etc. If more accurate duplicate checking results are needed, it is suggested to use a variety of duplicate checking tools for comparative evaluation to ensure the quality and academic integrity of the paper.