TUESDAY - Oi hi! Today, I discovered a nice and sweet yet very simple third party library that lets you zoom and double tap your Image in your UIImageView - yes, basically this library extends the UIImageView and just functions as a photo viewer. It took me some hours like 1 or 2 in searching for the appropriate library for my project.
It doesn't support installation thru Pods though. But it is easy to use, it composes of two files only. The name of this photo viewer library is VIPhotoView by user vitoziv.
Description on its repository: VIPhotoView is a view use to view a photo with simple and basic interactive gesture. Pinch to scale photo, double tap to scale photo, drag to scoll photo.
UPDATE: it does support pods: pod 'VIPhotoView', '~> 0.1'
It's easy to use. See the repository here: https://github.com/vitoziv/VIPhotoView