I’ like to develop an online marketplace and service provider iOS app similar to the amazon for my startup company. I need standard functions like email registration, user profile, listings etc. And special functions like: location tracking, map, booking system, embedded messenger for the host and customers, internet surveillance camera and rating system, payment system. I have two questions: How much does it cost? Is it possible to develop it by myself and how long?(no programming background) Regards Sam [Edited by Moderator]