A client for vTigerCRM Mobile API written in Objective-C, built for iOS.
My analysis and exploration of vTiger Mobile API is published at this GitHub page: http://gixworks.github.io/vtiger-mobile-client-ios/
Please note that this library is still under heavy development
I am currently using it for the iOS app ContactiCal, that can be downloaded on the App Store!
This project is released under MIT Licence.