"Own OS" is not a product. This is a phrase describing the operating system to which the device belongs, and applications written specifically for this OS (as opposed to Java applications that are cross-platform).
So, for example, "Native OS" for iPhone - iOS; and the “Native iPhone OS Application” will be recorded in Objective C. On the other hand, for example, the JavaScript application running on the iPhone is not native, because the Javascript application runs through a browser and not directly on the OS.
Another example: on a computer running Windows (obviously) MS Windows. C ++ applications using the Windows API are native; Flash or TCL / TK will not be native.
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