Customizing The Mobile App Like With Our Own Logo etc.

Hello to you all. First of all thank you for a lovely and useful theme like this. I want to ask you something about the mobile app. I know it is not that easy to put the app on to the google play store but still want to ask if I use this theme and want to create an app with my customer's logo in the app instead of my ticket app. Is it easy to do? Or is it doable also with an extra payment?Or if you can share the source code of the app with an extra payment we can do that ourselves too.Thank you for your reply Emre