Paper pass:
Paperpass is mainly based on Internet resources for duplicate checking. For the first draft, it has high efficiency and relatively low price, and sometimes it provides free duplicate checking opportunities. Its repetition checking system will judge that 13 characters appear as repeated characters continuously, and calculate it into the repetition rate. Therefore, for some disciplines and institutions that need to strictly control the repetition rate (such as academic journals, universities, etc. ), Paperpass is a good choice.
Check passed:
Checkpass is a system that focuses on providing paper detection services for students and scholars. Its database covers a large number of academic journals, papers and other resources, and the detection quality of academic papers is high. At the same time, Checkpass also provides English testing service, which is an advantage for authors who need to submit English papers. In addition, Checkpass's duplicate checking system also supports Internet resources based on big data as a comparison database, which has fast detection speed and relatively low price.
In a word, Paperpass and Checkpass have their own advantages and disadvantages, and you need to choose which system to use for duplicate checking according to your personal needs and paper type. If you need to quickly test the first draft, mainly focusing on Internet resources, you can consider using Paperpass；; If you need a higher quality academic paper detection service and there is a great demand for English paper detection, you can consider using Checkpass.