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.
If you're not rushing to update your iPhone to iOS 26 anytime soon, these are important iOS 18 settings you can change now. Jeff Carlson writes about mobile technology for CNET. He is also the author ...