Hello,
Greetings from BEST1.
After carefully reading your requirement, we came to know that you want to build a website as well as you want to build the mobile applications and also you want both of them to synchronize. Furthermore, you want integration of social media, payment gateway, Google maps, SMS API with the platform. We would like you to share your complete requirements to us so we can provide you the better solution as per your expectations.
We would like you to ask following questions so we can get better idea about the system.
Do you have any reference website or apps to match your requirements?
Which technology would you prefer for the project development?
Do you have any feature or functionality document for the project development?
Which apps do you want? iOS or android or both?
Kindly go through above site and let us know your thoughts and please share with us project information so our BA can review and propose you best solution. Once project scope has been reveals we will discuss about the project cost by mutual understanding.
Regards,
NM