An APP that could make money by watching videos and novels, how did the developers make money?

An APP developer who made money by watching videos and novels could make money in the following ways: 1. Advertising revenue: The developer can set up advertising spots to allow the advertisers to place advertisements in the app. The developer can earn advertising revenue from it. 2. Virtual goods sales: The developers can introduce virtual goods such as novel coins, video coins, etc. The users can use these coins to purchase virtual goods when using the app. The developers can obtain the income from selling virtual goods. 3. In-app purchases: The developer can improve the user experience of the APP through in-app purchases, such as adding functions and improving the interface effect. The user can use these purchased functions or interface effects, and the developer can earn in-app purchases from it. 4. Data sales: The developer can sell user data to third-party companies such as analysis companies, market research institutions, etc. The data includes user behavior data, portrait data, etc. The developer can obtain data sales revenue from it. 5. Promotion income: The developer can earn profits by promoting the app. For example, the developer can earn promotion income by promoting their own APP to other apps or websites. The above are some common ways for developers to make money. In fact, developers can also choose the appropriate way to make money according to the characteristics of the APP and market demand.