UpPromote Affiliate Marketing

Brilliant app, we're using it for affiliate referrals and also customer referrals. The customer referrals isn't 100% there yet, there are a couple of features they really need to add, but even so, it's still ten times better than the customer referrals app we were using previously. The affiliate app is great, very versatile.
Probably the best thing about UpPromote though is their support team, literally any time we have a question, they're there on the chat system within a minute or so, they're always really helpful, definitely among the best apps I've ever experienced when it comes to the quality of customer support.