Part of the problem of migrating WindX to a iOS or Android device has to do with real estate and control compatibility.
iNomads provides a solution that addresses control compatibility but many applications are not well suited to the smaller screen sizes and often require rework. In many cases its just not practical on a small screen to allow for the number of controls/inputs that most applications want.
As for the specific issues you mentioned, we are looking at addressing both the expense of iNomads and the ease of implementation with PxPlus 2019 with the introduction of an App builder. These should make it easier to integrate PxPlus applications with your iOS or Android devices.
Lastly, for many clients the simple solution for running on a Smartphone or iOS is to use the free Windows RDP app and connect to a Windows server running the application either locally or via WindX.