Hi
I Have seen your reference app before also and I am sure I will be able t help you.
I am also working on something similar from last 2 to 3 months.
Please come to chat we will have detail discussion and demo for it.
We are leading IT company in India having 6+ years of experience and mastery in App and Web development, App and Web designing, backend, SEO/SMM cloud services, and enterprise solutions.
We have knowledge of Xcode IDE(Objective-C), Swift, Eclipse IDE, Android SDK, ADT Plugin, Java Programming, JSON, XML, laravel , Codeigniter, Angular, Utility APIs, MySQL and SQL server database, super level UI design and much more.
Please come to chat for further discussion so that we can start immediately.
Best Regards
Logical SoftTech