Sample code demonstrating how to use the BPM and Blueworks Live REST APIs used in building the IBM Business Process Manager iOS app are available on the BPM Sample Exchange. If you don't already have an account on the Sample Exchange wiki you will need to register for a new free account before you can access the samples.
BPM Mobile (iOS) Sample: http://bpmwiki.blueworkslive.com/display/samples/Mobile+BPM+%28iOS%29+sample
This sample contains code from the IBM BPM app, showing how we use the IBM Business Process Manager and Blueworks Live REST APIs in a mobile application. Review this sample to gain knowledge about how to use the Business Process Manager and Blueworks Live REST APIs for an objc/iPhone/iPad environment.