The SeamlessWeb app uses your GPS to locate participating restaurants in your local area. The app displays their full menu choices, shows you the minimum needed for delivery, lists the estimated delivery time, and lets you check out with your credit card. You can even add a discount promotion code. Currently it's only available for those with personal accounts not corporate.
The interface is pretty quick with no discernible lag. Browsing through menus and food choices is no trouble at all. Just click on your meal, add to cart, insert any special instructions, enter a delivery address, and that's all there is to it. You'll need to create a free account to place an order which can be done directly within the app itself.
The only downside is it's only available in 14 cities: New York City (Manhattan, Queens, Brooklyn), New York Metro (Hoboken, Jersey City, Stamford, Greenwich), Washington DC, DC Metro (Arlington, Bethesda, Chevy Chase), and select areas within San Francisco, Chicago, Boston, Philadelphia, and Los Angeles. While coverage is limited they are looking to expand to new areas.
SeamlessWeb Food Delivery is available for all GPS enabled devices with OS 4.5 or higher. Most importantly it's free to download.