A discounts-finder, map based app - phonegap friendly (and preferrably written in meteor, if not - html/css/js)

I have a database of businesses giving discounts around a city, geo-coded and categorized (food, culture, clothing etc), and wish to develop a simple app that allows the user to find discounts based on his/her location. The user should be able to view the discounts on a map and get directions to the store based on the location. The user should be able to filter (display only clothing store) or search full text for name of store, street, or discount type (20% or 1+1 for example). There should be an easy way for an admin to create and update discounts for stores. We prefer a simple DB like Mongo, other options might work. Screens: 1) First screen - splash screen to display for a few seconds 2) Second screen - a few buttons (A button for the map, button for about / customer service phone etc), and an area for displaying "discount of the month". 3) Third screen - map screen + search / filtering UI. The app's interface should support bi-directionality: RTL + LTR. Technology: We prefer [login to view URL] (see [login to view URL]), but are willing to work with pure html5/css/js - as long as the app is phonegap friendly and can be ported to Android.