Mobile development

I need an Android app. I would like it designed and built. Hey guys I want a Android as well as iOS app and a website that could be used for virtual stock trading . , Users can create account and profile and trade based on real stock price but with virtual money . They can increase virtual cash with real money . They can even buy mutual funds , bonds and get to know about their portfolios etc in a pre chat or bat graph . Ui should be appealing and must user friendly . Should support Most of the stock market . Even guys can invest in foreign socks and futures based the current exchange rate . Should support even currency trading . I prefer both native apps as well as apps based on xamarin forums or phone gap . The app will be free while some features like investing in foreign stocks will be trail following which customers will have to pay .