- What is the compatibility in terms of license with an API? For example: GPL license from the client side and PHP license from the server side, is it possible?
- Can the Android application contain integrated payments?
If the client application and the server application are in different repositories, both can have any type of license that will be compatible because the communication of the applications in a web service is through the network.
Different happens when using code we import libraries from external repositories, where before using a repository you have to check what can be done and not with a license.