Need a app for android and Ios as well. here are the few outlines
1. app should include local/online deals for all categories in shopping area
2. App should parse the data from multiple sites in that region.
3. business can add their ad on request by paying charges.
4. Users can see the local / online deals discounts and can comment and review the deal and businesses as well
If you are interested let me know or you can search app "Slickdeals" as the project will be 80% same