The Appboy Objective-C Sample Code by Appboy demonstrates how to create an application based on the API. Project is under XCode file. The sample in a different folder contains Facebook connect, dialog, and request.
Talkray is a mobile application created by TiKL, a company also known for its TiKL Touch To Talk walkie-talkie application for Android and iPhone. Talkray is the company's broader communications app that allows users to make phone calls as well as send and receive text messages and photos. Talkray's API makes it possible for developers to add things like voice calling and text chats to their applications.
The last year has seen a virtual worldwide tour of app contests, finding the best mobile developers across the globe. In March it comes to North America for only the second time, in Texas for SXSW. The App Circus, as it's called, is looking for mobile apps to showcase, and the deadline is fast approaching.