The Mobage iOS SDK by DeNA allows API communication to implement mobile gaming functionalities. To start development, users can create a project in XCode, import & integrate the SDK, and enable login. Additional resources include social capabilities, working with the People API.
Localscope, the app that:
"lets you see and know your locality like never before," now "enables third party applications to use the Localscope app to search for and discover geo tagged information via the Localscope API."