Hello Rishikesh,
my name is Valentine. I'm a representative of Ukrainian IT Company «Webbook». We work since 2008; our portfolio on this website: https://www.freelancer.com/u/webbookstudio.html. Our main field is mobile development.
We have looked through your description, ready to start the work on your project. You can look through our works on Android: https://www.freelancer.com/u/webbookstudio.html#; iOS: https://www.freelancer.com/u/webbookstudio.html#, or we can send you the examples of our similar projects. We can discuss all details here or, if it is more convenient for you, via skype.
Contact us and we will reply immediately.
With regards,
Webbook team