Elias here with Shopify Support. Thanks for reaching out.
That’s a great question. I’ve selected two of the highest rated affiliate apps for you to try out. Since they are both really great at managing and tracking affiliates, I recommend taking advantage of their free trial so you can decide which one you prefer. I am also including a filtered list of affiliate apps from our app store in case you'd like you take a look at the others.
If you require assistance with these apps, you can always reach out to the developers directly through the contact information found in the Support section of the app’s page.
Is this what you were looking for? If you have any further questions regarding this topic, feel free to reply to this thread and I’d be happy to help.
My Gravy Sales & Marketing app can do affiliate programs and/or customer referral management... I'd be happy to give you a lifetime free account to check it out and provide some feedback. https://apps.shopify.com/gravy