Thanks, KORDS!
I’ve also found Identifyy, but I always search for reviews if i don’t know website or it is new. There is no any review about them so far. So if you will find some info about them, please let us know 
There is one more called Orfium. I’ve tried to contact them via email and didn’t got any answer in more than one month. That attitude shows, how the platform will “work” 
One more platform is Audiam, but as we can see in some user reviews, comparing with AdRev there is very poor revenue.