What are some alternatives?
Best Referral Programs - A curated directory of startup referral programs
ReferCodes - See your friends’ referral codes and share your own
Viral Loops for Startups - Virality for startups made easy 💪
Viral Coefficient Calculator - Calculate a viral referral loop for apps
GiveYaw - Online giveaways made easy 🎁
Glimpse - Discover exploding trends before they take off