I can only say that most of the people who apply for premium membership are professional painters. Accounts are very important to them because they want to publish their works. Generally, they will not lend them to others

Premium members are nothing more than being able to directly browse high-quality works with high click-through rates

In fact, you can collect a few sharp painters, and the works in their collections will usually not be that bad. Go

There is a PIXIV app on ios which is very convenient