I was started using hayZap about 45 days ago in one of my app which have most user from Brazil and Indonesia …I used admob,FAN,Applovin and heyZap ads …Initially i was getting 2.5-3$ eCpm from FAN and 2$ solid eCpm from heyZap…Applovin eCpm is very low…The below is my report from last 7 days …FAN and heyZap eCpm dropped a bit…If you are looking for good mediation try heyZap …Its working well for me and the integration is easy…One important thing 70-75% impressions are banners in below report
HeyZap is not bad for sure. But I tried going directly to FAN/Admob without mediation and I have better revenue now. (but my traffic is very small, so it may just be random)