Most features that they have to get access to additional locked chapters rarely work. If an author updates a chapter after posting it, the only way to update the chapter for the readers is to delete the book from their library and then readd it. The translated books that the app pushes usually is on par with machine translated works, and the app hides those low-quality books behind paywalls for the first week they are released then release 40+ chapters for free. Overall quantity over quality.