SHAREit is a free application. You do not need to pay any subscription fees to use the basic features of SHAREit, such as file transfer between devices. However, there may be some premium features or content that you may need to pay for within the app.
Additionally, you should be aware that SHAREit may display ads in the app, which could generate revenue for the developers. While these ads are typically not intrusive, they could be annoying or distracting for some users.
Overall, SHAREit is a free application that you can download and use without paying any fees. However, you should always be mindful of in-app purchases, ads, and other monetization models that may be used in the app.