Exactly what I wanted

This is an easy-to-use app that does exactly what I wanted which was just the ability to quickly see a photos metadata on the iPhone.
Note that you do have to share your location with the app, though. Otherwise it cant access the metadata like gps info, etc. It looks like this is the same for other apps like this as well so it looks like it is something required by the iPhone, not just some stupid requirement of this app.

Devinslc about Photo Metadata Reader