Adding Platform

Hi there,
I’m new in ionic, I’ve searched everywhere, but I can not found any topic about this (sorry if it exists but I’m not find it)

I’ve a question about adding platform. Can we add platform after the development? How about all the plugin?

Because I’ve mac and windows, but my chrome in mac have a problem, so I can’t use postman in mac, that’s why I’m developing with windows. Can I add iOS platform after the development finish?

Thank you for all your help :slight_smile: