There is a member type which pays for the subscription and then adds contacts who use the apps for a period of 1 month. These contacts added need not pay anything to use the apps. They are free and just use a refer code to signup.
This is a health and wellness apps that promotes wellbeing, counts steps and walking over the period of 1 month.
Its not a digital product like ebooks etc
So do i need to add IAP ?
