Hi,
I have gone through your Requirement and I am sure I can build a app and web like olx , property bazar, 99acar com with power full admin penal in web.
We are the IT company having 8+ years of experience in App and Web development, App and Web designing, backend, SEO/SMM cloud services, and enterprise solutions.
We have knowledge of ANDROID, IOS, Xcode IDE(Objective-C), Swift, Eclipse IDE, Android SDK, ADT Plugin, Java Programming, JSON, XML, Utility APIs, MySQL and SQL server database, super level UI design and much more.
For further analysis and discussion regarding your project please come to chat
Thanks