If the iphone application and the units with which it needs to communicate are in the same WiFi network, then combining UDP and Tersus could work.
This would require writing a PhoneGap plugin to handle UDP communication, while the GUI / Application logic can be created with Tersus. This integration will require knowledge of iOS, PhoneGap and Tersus so I guess our team will best positioned to do it.
If you're looking at an iOS only application then going with a pure Objective C approach is certainly something worth considering. Tersus would have a lot of value if the communication layer is relatively simple and stable while the rest of the application will continue to evolve.
If you would like to discuss this further please send us a message.
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