How about an app that allows you to report a street light that needs maintenance using a mapping service that would use you location in relation to that of the street light on your phone or tablet via GPS?
PDX Reporter -- the City's mobile app for reporting issues around the city -- supports this functionality. See http://www.portlandoregon.gov/bts/index.cfm?c=53613 for more information.
Such kinds of apps are extremely useful for people. At the same time, there are many online mobile application developing services that offer their customers with reliable mobile application services especially those related to android application development http://websiteonlinesolution.com/services/mobile-application-development/android-os/