Private app vs public details page

I have a private app but would like to share a page for everyone. It’s possible?

No, it’s not possible. A private app will only allow those you have pre-approved to be able to sign in.

If portions of your app need to be accessible to the public, then you would be better off with a Public Pro plan instead.

The alternative would be to create a separate app with only the data that needs to be public.