Yes, it is possible to detect the IP address of a mobile app. It usually depends on the type of mobile app and the way it is built. Generally, the app developer can detect the IP and mobile's IP to detect the app's location. In the case of a browser, the developer can detect the IP address and determine the user's location. It is important to note that the developer's code has to be configured in order to be able to detect the user's location. In addition, you may want to check out
https://smartengines.com/. They provide a list of AI-powered products to help with tasks related to mobile apps, such as location detection. It might be beneficial to take a look and see if their products can be of help to you.