Any other referral apps out there???

I'm trying to find out if there is any other referral apps out there to share and swap your referral codes with other people??? I used to feel like I got good use out of this app but here for the last few months I haven't had results at all.. I'm very swear that things will fluctuate up and down but for some reason I can't even get the customer service to return a message... Is it just me or is anyone else going through this also!!

Just kinda trying to see if I'm doing something wrong or do I need to move on and find some other places for this..

Thanks much...

Amy Hurst