Define trigger and incentive
Both sides of the referral need a real incentive to move meaningfully.
REFERRAL LOOP DESIGNER
Referral Loop Designer
Outline a simple referral mechanism aligned with your user value, and calculate the growth multiplier it could realistically produce.
- Uses your inputs in a transparent calculation
- Instant result with practical next steps
- No signup required
Planning guidance only. Validate important decisions with customer evidence and your delivery team.
YOUR INPUTS
Build your result
Complete every field. The result updates only when you choose Calculate.
How it works
Estimate share and conversion rates
These two rates, combined with active users, project new users.
Calculate viral coefficient
A coefficient above 1 means the loop can sustain growth on its own.
Continue learning: Activation as a product-market-fit signal · Which metrics actually validate an MVP?
Frequently asked questions
What's a realistic share rate?
Usually single digits to low teens as a percentage of active users — treat higher estimates skeptically until proven.
Do referral programs work without an incentive?
Rarely at meaningful scale — most successful loops reward both the referrer and the referee.
Is k > 1 required to matter?
No — even a sub-1 coefficient can meaningfully lower blended CAC alongside other channels.
How We Compare
| Feature | MVPHub | ReferralCandy | Viral Loops |
|---|---|---|---|
| Viral coefficient calculation | Included | Limited | Limited |
| Referral program hosting | Not included | Included | Included |
| Dual-incentive planning | Included | Limited | Limited |
| New-user projection | Included | Not included | Not included |
ReferralCandy and Viral Loops run the referral program itself. MVPHub models the expected growth impact before you build or buy either.
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