Add opacity to Activity and decrease it every day until their app completely fades away. Set a due date and customize the number of days you offer them until the app is fully vanished.
dependencies {
implementation 'com.github.hackerwgf:notpaid:1.0.1'
}public class App extends Application {
@Override
public void onCreate() {
super.onCreate();
NotPaid.init(this, "2019-02-14", 30);
}
}Inspired from github (@kleampa)
Made by hackerwgf