I think for iOS you do need an email address to set up an account. But wouldn't an email address be kind of a necessity anyways? For Android, as far as I know,

I think for iOS you do need an email address to set up an account. But wouldn't an email address be kind of a necessity anyways? For Android, as far as I know, the app can just be a download from a webpage, so you'd bypass the need to use the app store, and the need for an email address. One way perhaps to solve the iOS issue (assuming you'd even want to do this for iOS devices) is to do whatever it is that some companies do where apps come pre-installed for new employees. Not sure how that works and what the options are, but that could be a way to avoid the apple app store.