Robinhood’s referral solution to a unique challenge with waitlists In Mailbox’s case, most people got tired of seeing so many people ahead of them on the waitlist week after week. Mathematically, they were making progress by moving ahead 40,000+ positions in a week at a time. However, psychologically they felt that there are still zillion people ahead of them and started deleting the app. Robinhood took a very interesting approach to tackle this problem. They gamified it by giving users an option to get priority access by referring their friends and family. People love playing games, especially when those games are tied to rewards they actually want. Look at the screenshot above, there are options to refer friends via Twitter, Facebook, Email, LinkedIn. The more people join using a user’s referral link, the sooner she will get access. Giving users an option to control their position on the waitlist gives them a sense of autonomy — the feeling of controlling their own destiny. It’s one of the most important ingredient of intrinsic motivation. This played a very important role in the exponential growth of their waitlist. Launch before launch It was a Friday night, Robinhood team had been working on the waitlist in preparation for their press launch, which was on the following Wednesday or Thursday. The very next morning, founder Vlad Tenev opens up Google Analytics and surprisingly sees 600 active people on their site. It wasn’t normal for them as only a handful of their friends and family knew about it. Looking closely at the analytics — he saw a lot of traffic coming from Hacker News — A very popular site among the tech community all over the world. When he opened up Hacker News, he sees the post: “Robinhood: Free Stock Trading.” trending in the number 3 position. The challenge for them was that the waitlist system wasn’t ready and emails weren’t getting captured. So, the entire team rushed to the office to get everything up and running. With the semi-broken system, they ended up getting 10,000 signups that first day and over 50,000 on the first week — which is something they had never even dreamt of. Within a year, more than 1 million people joined the waitlist to use their service. The app was officially launched after getting all the regulatory approvals in March 2015, almost 2 years later. Just yesterday, the app closed a $660 million funding round. There is a lot to learn from other’s success as well as failures. Below are a few articles that I have written on the topic of growth using the referral program. Do read them to get interesting insights. How a millennial-focused investment App used Scratch Cards to 100x their referral program? Lessons from AppBrowzer Referral Program — 300k to 1.5 million users in 21 days (Part 1) Dropbox Referral Program — A Story of 3900% growth in just 15 months PayPal Referral Program — Case Study of the Internet’s first viral growth hack using referrals