Private number text app

I need some help. I can’t have a burner phone but need an app that would have a separate number and private texting for obvious reasons. Something that would be password protected or hidden on a iPhone.

I would appreciate any suggestions.

Try google.

I haven’t looked into it but I read somewhere that there is an app that can put in your phone that is disguised as a calculator. You click on the icon and it opens up as a calculator. You enter the secret code and it opens up again to a place where you can put other apps, photos, etc that you don’t want found.

I use text now.