From 800 to 40 000 Users in One Day Thanks to Referral



Peter’s a tutoring chatbot available through Facebook Messenger, always there and ready to help students with whatever questions they may have.

It's super easy to use: just send a question, wait a few seconds and you’ve got the help you need from a qualified tutor. It really works like magic! ✨

Our early users were pumped and everything was great but we needed to find our marketplace equilibrium.

We actually got an early peak of users about a month after launch. When we saw that, we opened up the service to a bunch more tutors — and that meant that we didn’t have time to check them all out, pedagogically speaking…and all of a sudden, our users were less pumped about the experience.

This was an URGENT issue. If students didn’t like the help they got with Peter, no more 5-star ratings, no more shares, no more talking about it with everyone they knew, and of course, no satisfaction for them or for us. We therefore had to slow down the onboarding of new students to ensure that the number of good tutors was proportional to the number of students.


​That's when we set up a the queue jumper hack 🚀 What is this? This is basically a waiting list that the user can jump by sharing Peter with others. Anyone can sign up for Peter, but they’re then put on a waiting list. The fastest way to jump up that list is by sharing Peter with your friends.

We put this system in place over the winter holidays, when Peter’s activity was at its lowest. At that time we had about 800 students and 300 tutors.


On the first day that the Queue-Jumper was deployed, we got 16 new users. Not bad! On the second day, we got 64. And that’s when I started to think and called up my co-founders, saying: “Guys, if we can keep doubling every day, or even just every week, we’ll be up to 10,000 users really fast!”
But Peter didn’t double every day. On Day 3, he absolutely exploded : 40,000 new students sign up IN. A. DAY.

(Of course, there was no 4th day. Our servers completely crashed and we had to remove the queue-jumper.)


Peter Homework

Peter Homework

Homework support messenger chatbot


Jean-Sébastien Wallez


Never miss a Growth opportunity !


How we’ve increased our store rating to 4.9🌟

How we’ve increased our store rating to 4.9🌟

How we used variable rewards to get 100x more referral

How we used variable rewards to get 100x more referral