My all apps (including which are suspended last year are also listed in these type of sites) . And even ** Google App which are not on playstore are listed here **All big companies apps and games are listed here without any notice.
See what they written in there policy
.
According to there policy they not accept any modifying app . So i think it’s safe.
Quora answer:
And this is your app listed by any other one not by apkpure Developer.
Final answer :- Your app is safe and by these type of sites you got more downloads because they not modify your app it is same as they look in google play.
If you want to remove it than file a report at this page https://m.apkpure.com/contact-us.html.
Hope you got your answer