django webapp -- 2

I need a simple Django app that will allow users to get points for inviting their friends to join the app. The frontend is in django templates. As a result, you will only work on the backend logic, thanks.

https://docs.google.com/document/d/1ajNTJsWjpKVeNASdG7VKcWJETVhvnbnQ4QkQGAnHEzo/edit?usp=sharing

BUDGET - $80
DEADLINE - 5 DAYS