Currently, I find out who refers who by simply asking the question in the sign up form: "Who referred you?"
However - I want to make it look more professional and legit to my affiliates by giving them their exclusive OWN Referral Link.
All I want to see is who refers who and who they refer and so on via a referral link system.
No payments/ecommerce/etc involved whatsoever when the person refers someone. When someone clicks the ref link, they would get sent to a landing page to do a free sign up.
All I literally want to track is WHO referred WHO to sign up.
Is there any 3rd party referral link software I can use for this?