Q. What technologies are using?
Q. Is it support for both PHP 5.6 above & 7
Q. What is server requirement to host?
A. It should be fine the shared hosting with cPanel.
Q. Can I get source code and able to modify?
A. Yes, you can get all source for both frontend and backend and able to modify whatever you want.
Q. It is included Backend & API as together?
A. Yes, you can manage all content from Backend and then RESTFul API will transfer data in between App and Backend.
Q. Do I need to know programming knowledge to modify the app?
A. Yes, especially CodeIgniter MVC Knowledge.
Q. Can I use same backend for web and mobile apps?
A. Yes, you can manage all data from single backend.