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Real-time referral tracking: SoFi's A/B test

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The bottom line

SoFi showed users in real time how their referred friends moved through sign-up, and referrals grew 20x to 40% of all new users in three months. Making progress visible and earnings clear turns a rarely used referral program into a main growth channel.

Key takeaways

Real-time tracking replaced silence with visible progress
Old flowReal-time tracking
Feedback after inviteNone until rewardLive, per friend
Friend's sign-up stageHiddenShown step by step
Potential earningsUnclearShown at each step
Reason to keep invitingLittleClear motivation
The old flow said nothing until a reward arrived; the new one showed each friend's progress and what the user stood to earn.
  • Real-time tracking of referrals lifted referrals from a minor channel to the largest share of sign-ups. Users could now see what happened after they invited someone.
    • Referrals rose 20x within 3 months.
    • They went from 2% to 40% of all new user sign-ups.
  • The old flow gave users no feedback until a reward arrived. That left the process opaque and gave little reason to keep inviting.
    • Users only learned a referral worked when they received a reward.
  • The new flow showed each friend's progress through the sign-up stages. This made it easier to track and encourage successful referrals.
  • Showing potential earnings clearly was meant to cut friction and raise motivation. Users could see what they stood to gain at each step.

The problem

Referrals made up only 2% of new users, and the process gave users little engagement or transparency.

  • SoFi wanted to raise a low referral rate by making referrals more engaging and transparent.
    • Referrals were just 2% of new users.
    • Users saw nothing about a referral's outcome until a reward came in.

The test and result

Referrals went from 2% to 40% of sign-ups
Before tracking2%
3 months after40%
Within three months, referrals became the largest single source of new SoFi users.

A real-time view of friends' sign-up progress replaced the wait for a reward, and referrals soared.

  • The new solution gave users live visibility into where each friend stood in sign-up.
    • Tracking made it easier to follow and encourage successful referrals.
    • Clear display of potential earnings aimed to reduce friction and boost motivation.
  • Referrals grew 20x and reached 40% of all new user sign-ups in 3 months.
    • The full write-up is at insidergrowthhq.com, in a piece on creating a referral and rewards program.
Version A and version B as SoFi tested them.
Version A and version B as SoFi tested them. Screens from abtest.design.

In the growth library

SoFi, Referral test. SoFi made referrals transparent by showing users in real time how far each invited friend had progressed through sign-up, instead of revealing success only when a reward arrived. Referrals grew 20x and went from 2% to 40% of all new user sign-ups within 3 months.

Lessons that draw on this:

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