Nathan, I understand that the "create account" link on iOS is in the "Account" dialog in the hamburger menu. However, here's the problem: Imagine a new user is in the app, and they do not have an account and are not signed in. They encounter some entitled content with the lock.
When they tap "sign in" from one of these screens, all they see is the log-in screen below on iOS devices.
In this case, they have no idea how to create an account. They aren't going to know to go to the hamburger menu and tap on "account" to find it.
Both the Android and Web Viewer sign in screens have the "Create an account" link. The iOS sign in screen needs to have this as well!