Track Signups with Referral Codes

Last updated: March 11, 2026

Rally lets you track where participants sign up from by adding a &ref=[code] query parameter to any signup form or public study link URL.

Simply add &ref=[code] to the end of the URL and replace [code] with a unique identifier for each traffic source, such as facebook or newsletter, and Rally will automatically capture it as a referral code property on each participant.

Before sharing, always make sure to test each referral link you create to ensure it's set up correctly and works as expected!

Below is an example of how an shareable link can be modified to include a referral code:

Original URL	https://rally.example.com/signup
With newsletter attribution	https://rally.example.com/signup&ref=newsletter
With social media attribution	https://rally.example.com/signup&ref=socialmedia

Referral code properties

Rally tracks referral codes at signup and surfaces them as filterable properties on people tables. This lets you see which referral codes brought participants to your studies and forms.

Here are details of the various Referral Code related properties Rally offers:

All Referral Codes	All referral codes associated with a person's signups across all studies and forms in the workspace
Study First Signup Referral	The first referral code used when this person signed up for a study
Study Last Signup Referral	The most recent referral code used when this person signed up for a study
Form First Signup Referral	The first referral code used when this person signed up through a panel form
Form Last Signup Referral	The most recent referral code used when this person signed up through a panel form

Best practices using referral codes

Unique Codes: Ensure that each source has a unique `ref` code.
Consistent Naming: Use a consistent naming convention for `ref` codes.