A new app, named LeftoverSwap, that allows users to locate their half-eaten food materials and share them with others is being unveiled. The app is capable of making food products like bread, milk, burger, plantain chips, sausage, pizza, gari, yam, akpu
and more; available to others. The description of how the app works is as follows: snap a picture of your excess food, give it a name and click on share. A pin will drop on a map afterwards, hence allowing "Leftover Takers" to browse for their preference by geographical proximity.
http://www.searchlightnigeria.com/2013/10/app-that-allows-you-to-find-and-share.html