Hi,
Thanks for posting your app requirements on Freelancerr and we are very comfortable with the PHP, CodeIgniter, Cake PHP, Symfony, Responsive theme and have all the necessary skills in house to help in cloning an existing site.
I would request you to have a discussion with us at least before deciding on the app development vendor to discuss all your concerns, ideas and issues. This would provide us with an equal opportunity to evaluate us for your app requirements.
I am attaching my corporate profile for your kind consideration and would request you to provide me with details of the site so that I can provide you with detailed proposal outlining our implementation approach, estimates etc.
Thanks
Deepak