Answered
It's 2018. Shouldn't the Acrobat app have sorting by date?
Listing files with different sorting criteria, such as by date, has been around since the 1960's.
How is it 50+ years later such a fundamental expectation is not implemented in your app?
A so-called "user story" for your developers: I want to find the file the mobile device browser just downloaded so that I can print it.
Mobile browsers frequently don't indicate filename of a download, or filename is an arbitrary number-letter string listed with other such names.
Your app has no sorting by date by all. A user must look through a list of say 100 files one by one at the time stamp to find what just downloaded.
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