Other Tracking Client APIs can be found on the Tracking Server Resource Center
The Tracking Client API for iOS/Mac is built with ObjectiveC and XCode, for iOS and Mac Operating Systems, and works alongside with ArcGIS Runtime SDK for iOS.
To download the Tracking Client SDK for iOS/Mac, which includes the API Library, documentation, and samples, simply (1) login and (2) download the Tracking Client SDK for iOS/Mac.