Turn my current joomla website into a droid/iphone app

I want to turn the voting parts of my website into an iphone/android application. The app can be downloaded and installed from the mobile version of my site so that the person doesn't have to use the browser. The key is that it has to interact with my site's database to get the current photos to vote on, and must record the votes as my site does into my site's database. So really it's a mobile version of my site, in app form. my site is [login to view URL] and I would need one for all subsidiaries of that site as well...