Extending Mobile App Features


I need your guidance. Please stir me to the right direction.

I am building a mobile application where I need to extend it to different features.

For example, New APIs will not be available unless you purchase it. Can I do that if I develop a plugin in Cordova?


Can you explicate a bit more about what you mean by “API” here? To me, “API” is something programmers interact with, not users.