How to Insert Superscripts and Subscripts in Pages for iPhone

I'm trying to find customers for my Chemistry Keyboard extension for iOS 8, so I've been doing things like searching for questions people have asked on the web, the answer of which would be "Buy Chemistry Keyboard", and the title of this post would be one of the more common questions with that answer. I've tried it out on both my iPhone and iPad, and my keyboard will indeed insert superscripts and subscripts into Pages for iPhone and iPad.

So get it and you'll soon be quickly generating strings like:

2•Fe²⁺+2•H₂O→2Fe³⁺+H₂+2•OH⁻