You can't run iPhone apps on a Mac computer without an emulator, though that will change with a new set of Macs, coming out by the end of 2020.
You can't natively run iPad apps on a Mac without an emulator, but that will change with a new generation of Macs, coming out by the end of 2020.
The Linux Foundation is launching the React Foundation to serve as the home for React, React Native, and supporting ...