Does IOS App Cache is Deleted after updating from App Store?

i had a version 0.3.0 on App Store and then i released a new version with a lot more modules and features turning my app to 1.1.0 version, as the first users started to download the app i could see that some of them who had de app installed for long time ago, were still looking at the Style (Design) and Business logic from version 0.3.0.

In a couple of hours or maybe less than an hour, those same users were able to see the new modules and features from the new version (1.1.0)

My questions are:

  1. Was there a possibility in where those users were looking at some kind of cache version of my app during the first minutes of being updated?

  2. Does IOS caches any libraries, dependencies or code-related resources, making my users see the old version for a moment, even tho they just updated it?

Cheers!

Does IOS App Cache is Deleted after updating from App Store?
 
 
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