The version of K6TU Control in the Apple store is v1.4 and works fine with SmartSDR V1.3. I will be updating the app in the next couple of weeks to add some changes to the Objective C interface library but these will likely not be visible at the interface level.
K6TU Control does not provide support for CWX and likely will not. This app is intended to be used with SmartSDR for display of panadaptors, slices etc.
Please feel free to ask any questions regarding the app. You can find more information on K6TU Control at: