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Referral meter
Effort: Medium
What to notice
A meter fills toward the next reward as referrals come in.
How to build it
- Reward both the referrer and the friend.
- Show how many more referrals reach the next reward.
- State the conditions and expiry.
Measure
- Main metric
- Sign-ups via referral
- Guardrail
- Churn among referred users
When it backfires
Set rules against mass or self-referral for the reward, and check prize caps.
Theory behind it
Goal-gradient effect
People speed up as they get closer to a goal.
Well supported
Reciprocity
Receiving something makes people want to give back.
Well supported
Japan’s premium regulations
In Japan, prizes tied to a purchase are capped by the Act against Unjustifiable Premiums and Misleading Representations.
Law and official guidance