Why the 2 week time limit? Anyway, you could probably set up a site on Heroku and start building something with Ruby on Rails pretty quickly. It would be a marginal task to connect a jQuery Mobile application to the RoR app on Heroku. I think you should learn jQuery and jQuery Mobile if you want to build a mobile application, then use PhoneGap to build it for both Android and iPhone. The quickest way to start building a nice interface is to use something like jQuery with jQuery UI or jQuery Mobile for mobile apps. Ruby is very popular and there are lots of resources and tutorials available. If you want to build things really fast with less of a learning curve than Ruby, check out ColdFusion. It is proven, stable, fast, compiles to Java, supports OO, has great frameworks, supports full scripting or xml style markup and many other cool things. It's your call, but building in HTML / CSS / JavaScript (using jQuery) will be the quickest way to a front-end, building it with PhoneGap will be the quickest way to Mobile, and doing the backend in a rapid framework with lots of learning resources like Rails or ColdFusion.