In this directory you will find the iOS platform cross-calculator sample. The iOS version of the code builds a view controller in charge of displaying the interface to the user. The nimrod backend code is compiled into C code and put into build/nimrod as a pre-build phase of the project. When the calculate button is used the view controller calls the nimrod code to delegate the logic of the operation and puts the result in a label for display. All interface error checks are implemented in the view controller. You can use this as a starting point for your project or look at the history of the github project at https://github.com/gradha/nimrod-on-ios. That repository documents the individual integration steps you would take for any iOS project. This version of the iOS project is known to work with Xcode 4.2 and Xcode 4.4.1. The final binary can be deployed on iOS 3.x to 5.x supporting all iOS platforms and versions available at the moment.