All this apps are totally useless because they are using a blacklist of apps with apps that are financial not good for the virus companies.
They are scanning it and will disrecommend apps that are mostly not guilty.
And about the copy ;
This is just like Clash of Clans and Castle Clash they are almost the same because they are using the same game script that they are customizing their way.
Developers are paying for such script and then they customize it and voila !
Whenever you look to the stars, think of one of them as my soul.