How to implement 'rate my app' popup?

How come nobody asked this question yet?

I found these links for
Android: android - "Rate This App"-link in Google Play store app on the phone - Stack Overflow
and
iOs: iphone - Is It Possible To Add A "Rate This App" Link To My App? - Stack Overflow
but I hope Epics made something quick and clear for mobile platform. Am I wrong again?)

Pretty simple though

Problem is, how you can track if the user already voted it. Is there any way to to the vote system inside the app?

It is not necessary, you just need to track the event from any analytics service.

Didn’t find anything on this topic anywhere else regarding unreal engine or even a tutorial so if it helps anyone else:
To get real in-app reviews and not having the app open the browser or go to the store requires C++ knowledge.
Google has docs about how to implement it: