Hi, this doesn't show up in the iOS app only in the webapp or the MacOS native app as you mentioned.
When talking about templates there are two kinds.
The first that will create a whole or a part of workspace for you but it is only really usable at the building phase or while expanding your workspace.
The second templates are way more usable day to day. Those are the ones in databases (Notion Tables) that allow you to create new page in certain format every time.
Let me know if you have any specific use case in mind and I can help.