There are many light novel apps that you can refer to. The following are the more popular ones: Read it: Read it is a very popular light novel app that provides a large number of free novel resources, including various types of light novels, comics, animations, etc. Reading Bar supports online reading, download reading, and reading progress query functions to facilitate users to read anytime, anywhere. 2. Cool Reading: Cool Reading was also a very popular light novel app. It provided a large number of free novel resources, including various types of light novels, comics, animations, and so on. Reading Cool supports online reading, download reading, and reading progress inquiry, which is convenient for users to read anytime and anywhere. 3. The home of anime: The home of anime was also a very popular light novel app. It provided a large number of free novel resources, including various types of light novels, comics, animations, and so on. Animation Home supports online reading, download reading, reading progress inquiry and other functions to facilitate users to read anytime, anywhere. Of course, there were many other light novel apps that could be chosen according to one's preferences and needs. As for the useful app, it would vary according to the individual's needs. Different people might have different experiences. Generally speaking, if you want to read the latest novels, you can choose the app that updates in a timely manner; if you want to find a specific type of novel, you can search for related apps; if you want to support a variety of reading methods, you can choose the app that provides a variety of reading modes.